diff --git a/dlls/dinput/data_formats.c b/dlls/dinput/data_formats.c
index bc492631416..1f25556665f 100644
--- a/dlls/dinput/data_formats.c
+++ b/dlls/dinput/data_formats.c
@@ -74,7 +74,7 @@ const DIDATAFORMAT c_dfDIJoystick = {
     sizeof(DIDATAFORMAT),
     sizeof(DIOBJECTDATAFORMAT),
     DIDF_ABSAXIS,
-    sizeof(DIJOYSTATE2),
+    sizeof(DIJOYSTATE),
     numObjects(dfDIJoystick),
     (LPDIOBJECTDATAFORMAT)dfDIJoystick
 };
diff --git a/dlls/dinput/joystick_linuxinput.c b/dlls/dinput/joystick_linuxinput.c
index aea00df9cdb..4cce22219b7 100644
--- a/dlls/dinput/joystick_linuxinput.c
+++ b/dlls/dinput/joystick_linuxinput.c
@@ -899,7 +899,7 @@ static HRESULT WINAPI JoystickAImpl_GetCapabilities(
 	return E_POINTER;
     }
 
-    if (lpDIDevCaps->dwSize < sizeof(DIDEVCAPS)) {
+    if (lpDIDevCaps->dwSize != sizeof(DIDEVCAPS)) {
         WARN("invalid argument\n");
         return DIERR_INVALIDPARAM;
     }