diff --git a/clients/clickdot.c b/clients/clickdot.c
index be4ee181..c74bc915 100644
--- a/clients/clickdot.c
+++ b/clients/clickdot.c
@@ -180,11 +180,12 @@ keyboard_focus_handler(struct window *window,
 
 static void
 key_handler(struct window *window, struct input *input, uint32_t time,
-	    uint32_t key, uint32_t sym, uint32_t state, void *data)
+	    uint32_t key, uint32_t sym,
+	    enum wl_keyboard_key_state state, void *data)
 {
 	struct clickdot *clickdot = data;
 
-	if (state == 0)
+	if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
 		return;
 
 	switch (sym) {
diff --git a/clients/eventdemo.c b/clients/eventdemo.c
index cb8cbbf6..daf32839 100644
--- a/clients/eventdemo.c
+++ b/clients/eventdemo.c
@@ -188,15 +188,19 @@ keyboard_focus_handler(struct window *window,
  */
 static void
 key_handler(struct window *window, struct input *input, uint32_t time,
-            uint32_t key, uint32_t unicode, uint32_t state, void *data)
+            uint32_t key, uint32_t unicode, enum wl_keyboard_key_state state,
+	    void *data)
 {
 	uint32_t modifiers = input_get_modifiers(input);
 
 	if(!log_key)
 		return;
 
-	printf("key key: %d, unicode: %d, state: %d, modifiers: %d\n",
-	       key, unicode, state, modifiers);
+	printf("key key: %d, unicode: %d, state: %s, modifiers: 0x%x\n",
+	       key, unicode,
+	       (state == WL_KEYBOARD_KEY_STATE_PRESSED) ? "pressed" :
+							  "released",
+	       modifiers);
 }
 
 /**
diff --git a/clients/resizor.c b/clients/resizor.c
index 81865618..d02ab29c 100644
--- a/clients/resizor.c
+++ b/clients/resizor.c
@@ -139,12 +139,13 @@ keyboard_focus_handler(struct window *window,
 
 static void
 key_handler(struct window *window, struct input *input, uint32_t time,
-	    uint32_t key, uint32_t sym, uint32_t state, void *data)
+	    uint32_t key, uint32_t sym, enum wl_keyboard_key_state state,
+	    void *data)
 {
 	struct resizor *resizor = data;
 	struct rectangle allocation;
 
-	if (state == 0)
+	if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
 		return;
 
 	window_get_allocation(resizor->window, &allocation);
diff --git a/clients/terminal.c b/clients/terminal.c
index a0c69423..319f9c82 100644
--- a/clients/terminal.c
+++ b/clients/terminal.c
@@ -2079,7 +2079,8 @@ handle_bound_key(struct terminal *terminal,
 
 static void
 key_handler(struct window *window, struct input *input, uint32_t time,
-	    uint32_t key, uint32_t sym, uint32_t state, void *data)
+	    uint32_t key, uint32_t sym, enum wl_keyboard_key_state state,
+	    void *data)
 {
 	struct terminal *terminal = data;
 	char ch[MAX_RESPONSE];
@@ -2089,12 +2090,13 @@ key_handler(struct window *window, struct input *input, uint32_t time,
 	modifiers = input_get_modifiers(input);
 	if ((modifiers & MOD_CONTROL_MASK) &&
 	    (modifiers & MOD_SHIFT_MASK) &&
-	    state && handle_bound_key(terminal, input, sym, time))
+	    state == WL_KEYBOARD_KEY_STATE_PRESSED &&
+	    handle_bound_key(terminal, input, sym, time))
 		return;
 
 	switch (sym) {
 	case XKB_KEY_F11:
-		if (!state)
+		if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
 			break;
 		terminal->fullscreen ^= 1;
 		window_set_fullscreen(window, terminal->fullscreen);
@@ -2205,7 +2207,7 @@ key_handler(struct window *window, struct input *input, uint32_t time,
 		break;
 	}
 
-	if (state && len > 0)
+	if (state == WL_KEYBOARD_KEY_STATE_PRESSED && len > 0)
 		terminal_write(terminal, ch, len);
 }
 
diff --git a/clients/view.c b/clients/view.c
index 6d32b3ed..ee861e45 100644
--- a/clients/view.c
+++ b/clients/view.c
@@ -160,11 +160,12 @@ button_handler(struct widget *widget, struct input *input, uint32_t time,
 
 static void
 key_handler(struct window *window, struct input *input, uint32_t time,
-	    uint32_t key, uint32_t unicode, uint32_t state, void *data)
+	    uint32_t key, uint32_t unicode,
+	    enum wl_keyboard_key_state state, void *data)
 {
 	struct view *view = data;
 
-	if(!state)
+	if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
 	        return;
 
 	switch (key) {
diff --git a/clients/window.c b/clients/window.c
index 6da1251d..f1f91765 100644
--- a/clients/window.c
+++ b/clients/window.c
@@ -1819,12 +1819,14 @@ pointer_handle_axis(void *data, struct wl_pointer *pointer,
 
 static void
 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
-		    uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
+		    uint32_t serial, uint32_t time, uint32_t key,
+		    uint32_t state_w)
 {
 	struct input *input = data;
 	struct window *window = input->keyboard_focus;
 	struct display *d = input->display;
 	uint32_t code, num_syms;
+	enum wl_keyboard_key_state state = state_w;
 	const xkb_keysym_t *syms;
 	xkb_keysym_t sym;
 	xkb_mod_mask_t mask;
@@ -1852,7 +1854,7 @@ keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
 
 	if (num_syms == 1 && syms[0] == XKB_KEY_F5 &&
 	    input->modifiers == MOD_ALT_MASK) {
-		if (state)
+		if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
 			window_set_maximized(window,
 					     window->type != TYPE_MAXIMIZED);
 	} else if (window->key_handler) {
diff --git a/clients/window.h b/clients/window.h
index 9cef1602..1db5eb04 100644
--- a/clients/window.h
+++ b/clients/window.h
@@ -157,7 +157,7 @@ enum cursor_type {
 
 typedef void (*window_key_handler_t)(struct window *window, struct input *input,
 				     uint32_t time, uint32_t key, uint32_t unicode,
-				     uint32_t state, void *data);
+				     enum wl_keyboard_key_state state, void *data);
 
 typedef void (*window_keyboard_focus_handler_t)(struct window *window,
 						struct input *device, void *data);
diff --git a/src/compositor-wayland.c b/src/compositor-wayland.c
index 02ebc6cf..83bd6831 100644
--- a/src/compositor-wayland.c
+++ b/src/compositor-wayland.c
@@ -607,7 +607,9 @@ input_handle_key(void *data, struct wl_keyboard *keyboard,
 	struct wayland_input *input = data;
 	struct wayland_compositor *c = input->compositor;
 
-	notify_key(&c->base.seat->seat, time, key, state);
+	notify_key(&c->base.seat->seat, time, key,
+		   state ? WL_KEYBOARD_KEY_STATE_PRESSED :
+			   WL_KEYBOARD_KEY_STATE_RELEASED);
 }
 
 static void
diff --git a/src/compositor-x11.c b/src/compositor-x11.c
index 5a5c8db3..b64b26c5 100644
--- a/src/compositor-x11.c
+++ b/src/compositor-x11.c
@@ -586,7 +586,8 @@ x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 				 * event below. */
 				notify_key(&c->base.seat->seat,
 					   weston_compositor_get_time(),
-					   key_release->detail - 8, 0);
+					   key_release->detail - 8,
+					   WL_KEYBOARD_KEY_STATE_RELEASED);
 				free(prev);
 				prev = NULL;
 				break;
@@ -623,7 +624,8 @@ x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 			key_press = (xcb_key_press_event_t *) event;
 			notify_key(&c->base.seat->seat,
 				   weston_compositor_get_time(),
-				   key_press->detail - 8, 1);
+				   key_press->detail - 8,
+				   WL_KEYBOARD_KEY_STATE_PRESSED);
 			break;
 		case XCB_KEY_RELEASE:
 			prev = event;
@@ -707,7 +709,8 @@ x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 		key_release = (xcb_key_press_event_t *) prev;
 		notify_key(&c->base.seat->seat,
 			   weston_compositor_get_time(),
-			   key_release->detail - 8, 0);
+			   key_release->detail - 8,
+			   WL_KEYBOARD_KEY_STATE_RELEASED);
 		free(prev);
 		prev = NULL;
 		break;
diff --git a/src/compositor.c b/src/compositor.c
index 14d14943..7d4069e1 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -1790,7 +1790,8 @@ update_modifier_state(struct weston_seat *seat, uint32_t key, uint32_t state)
 }
 
 WL_EXPORT void
-notify_key(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t state)
+notify_key(struct wl_seat *seat, uint32_t time, uint32_t key,
+	   enum wl_keyboard_key_state state)
 {
 	struct weston_seat *ws = (struct weston_seat *) seat;
 	struct weston_compositor *compositor = ws->compositor;
@@ -1801,7 +1802,7 @@ notify_key(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t state)
 	uint32_t *k, *end;
 	int mods;
 
-	if (state) {
+	if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
 		if (compositor->ping_handler && focus)
 			compositor->ping_handler(focus, serial);
 
@@ -1819,7 +1820,7 @@ notify_key(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t state)
 			*k = *--end;
 	}
 	seat->keyboard->keys.size = (void *) end - seat->keyboard->keys.data;
-	if (state) {
+	if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
 		k = wl_array_add(&seat->keyboard->keys, sizeof *k);
 		*k = key;
 	}
diff --git a/src/compositor.h b/src/compositor.h
index 1ea2de5d..af4f94db 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -484,7 +484,7 @@ notify_axis(struct wl_seat *seat, uint32_t time, uint32_t axis,
 	    int32_t value);
 void
 notify_key(struct wl_seat *seat, uint32_t time, uint32_t key,
-	   uint32_t state);
+	   enum wl_keyboard_key_state state);
 
 void
 notify_pointer_focus(struct wl_seat *seat, struct weston_output *output,
diff --git a/src/evdev.c b/src/evdev.c
index a7162fcc..0a5ec91f 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -86,7 +86,9 @@ evdev_process_key(struct evdev_input_device *device,
 
 	default:
 		notify_key(&device->master->base.seat,
-			   time, e->code, e->value);
+			   time, e->code,
+			   e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
+				      WL_KEYBOARD_KEY_STATE_RELEASED);
 		break;
 	}
 }
diff --git a/src/shell.c b/src/shell.c
index 8f4822ff..bca7afc4 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -2482,11 +2482,12 @@ switcher_destroy(struct switcher *switcher)
 
 static void
 switcher_key(struct wl_keyboard_grab *grab,
-	     uint32_t time, uint32_t key, uint32_t state)
+	     uint32_t time, uint32_t key, uint32_t state_w)
 {
 	struct switcher *switcher = container_of(grab, struct switcher, grab);
+	enum wl_keyboard_key_state state = state_w;
 
-	if (key == KEY_TAB && state)
+	if (key == KEY_TAB && state == WL_KEYBOARD_KEY_STATE_PRESSED)
 		switcher_next(switcher);
 }
 
diff --git a/src/util.c b/src/util.c
index 01e59916..0b44b56d 100644
--- a/src/util.c
+++ b/src/util.c
@@ -249,17 +249,18 @@ struct binding_keyboard_grab {
 
 static void
 binding_key(struct wl_keyboard_grab *grab,
-	    uint32_t time, uint32_t key, uint32_t state)
+	    uint32_t time, uint32_t key, uint32_t state_w)
 {
 	struct binding_keyboard_grab *b =
 		container_of(grab, struct binding_keyboard_grab, grab);
 	struct wl_resource *resource;
 	struct wl_display *display;
+	enum wl_keyboard_key_state state = state_w;
 	uint32_t serial;
 
 	resource = grab->keyboard->focus_resource;
 	if (key == b->key) {
-		if (!state) {
+		if (state == WL_KEYBOARD_KEY_STATE_RELEASED) {
 			wl_keyboard_end_grab(grab->keyboard);
 			free(b);
 		}