diff --git a/dlls/dinput/tests/hotplug.c b/dlls/dinput/tests/hotplug.c
index 7187cf7dc38..5b9455d1819 100644
--- a/dlls/dinput/tests/hotplug.c
+++ b/dlls/dinput/tests/hotplug.c
@@ -977,11 +977,11 @@ static void test_windows_gaming_input(void)
     HANDLE hwnd, thread, stop_event;
     IInspectable *tmp_inspectable;
     HDEVNOTIFY devnotify;
+    boolean boolret;
     HSTRING str;
     UINT32 size;
     HRESULT hr;
     DWORD res;
-    BOOL ret;
     MSG msg;
 
     if (!load_combase_functions()) return;
@@ -1100,18 +1100,18 @@ static void test_windows_gaming_input(void)
     ok( hr == S_OK, "First returned %#lx\n", hr );
     IIterable_RawGameController_Release( iterable );
 
-    hr = IIterator_RawGameController_get_HasCurrent( iterator, &ret );
+    hr = IIterator_RawGameController_get_HasCurrent( iterator, &boolret );
     ok( hr == S_OK, "First returned %#lx\n", hr );
-    ok( ret == TRUE, "got HasCurrent %u\n", ret );
-    hr = IIterator_RawGameController_MoveNext( iterator, &ret );
+    ok( boolret == TRUE, "got HasCurrent %u\n", boolret );
+    hr = IIterator_RawGameController_MoveNext( iterator, &boolret );
     ok( hr == S_OK, "First returned %#lx\n", hr );
-    ok( ret == FALSE, "got MoveNext %u\n", ret );
-    hr = IIterator_RawGameController_get_HasCurrent( iterator, &ret );
+    ok( boolret == FALSE, "got MoveNext %u\n", boolret );
+    hr = IIterator_RawGameController_get_HasCurrent( iterator, &boolret );
     ok( hr == S_OK, "First returned %#lx\n", hr );
-    ok( ret == FALSE, "got MoveNext %u\n", ret );
-    hr = IIterator_RawGameController_MoveNext( iterator, &ret );
+    ok( boolret == FALSE, "got MoveNext %u\n", boolret );
+    hr = IIterator_RawGameController_MoveNext( iterator, &boolret );
     ok( hr == S_OK, "First returned %#lx\n", hr );
-    ok( ret == FALSE, "got MoveNext %u\n", ret );
+    ok( boolret == FALSE, "got MoveNext %u\n", boolret );
     IIterator_RawGameController_Release( iterator );
 
     IVectorView_RawGameController_Release( controller_view );
diff --git a/dlls/windows.gaming.input/vector.c b/dlls/windows.gaming.input/vector.c
index 8958b07c0f2..954d7df3552 100644
--- a/dlls/windows.gaming.input/vector.c
+++ b/dlls/windows.gaming.input/vector.c
@@ -108,7 +108,7 @@ static HRESULT WINAPI iterator_get_Current( IIterator_IInspectable *iface, IInsp
     return IVectorView_IInspectable_GetAt( impl->view, impl->index, value );
 }
 
-static HRESULT WINAPI iterator_get_HasCurrent( IIterator_IInspectable *iface, BOOL *value )
+static HRESULT WINAPI iterator_get_HasCurrent( IIterator_IInspectable *iface, boolean *value )
 {
     struct iterator *impl = impl_from_IIterator_IInspectable( iface );
 
@@ -118,7 +118,7 @@ static HRESULT WINAPI iterator_get_HasCurrent( IIterator_IInspectable *iface, BO
     return S_OK;
 }
 
-static HRESULT WINAPI iterator_MoveNext( IIterator_IInspectable *iface, BOOL *value )
+static HRESULT WINAPI iterator_MoveNext( IIterator_IInspectable *iface, boolean *value )
 {
     struct iterator *impl = impl_from_IIterator_IInspectable( iface );
 
diff --git a/dlls/windows.media.speech/tests/speech.c b/dlls/windows.media.speech/tests/speech.c
index 49a4915332a..feeeda58be4 100644
--- a/dlls/windows.media.speech/tests/speech.c
+++ b/dlls/windows.media.speech/tests/speech.c
@@ -524,7 +524,7 @@ static HRESULT WINAPI iterator_hstring_get_Current( IIterator_HSTRING *iface, HS
     return hr;
 }
 
-static HRESULT WINAPI iterator_hstring_get_HasCurrent( IIterator_HSTRING *iface, BOOL *value )
+static HRESULT WINAPI iterator_hstring_get_HasCurrent( IIterator_HSTRING *iface, boolean *value )
 {
     struct iterator_hstring *impl = impl_from_IIterator_HSTRING(iface);
 
@@ -532,7 +532,7 @@ static HRESULT WINAPI iterator_hstring_get_HasCurrent( IIterator_HSTRING *iface,
     return S_OK;
 }
 
-static HRESULT WINAPI iterator_hstring_MoveNext( IIterator_HSTRING *iface, BOOL *value )
+static HRESULT WINAPI iterator_hstring_MoveNext( IIterator_HSTRING *iface, boolean *value )
 {
     struct iterator_hstring *impl = impl_from_IIterator_HSTRING(iface);
 
diff --git a/dlls/windows.media.speech/vector.c b/dlls/windows.media.speech/vector.c
index c23fb9dc56e..05bbaf89bef 100644
--- a/dlls/windows.media.speech/vector.c
+++ b/dlls/windows.media.speech/vector.c
@@ -113,7 +113,7 @@ static HRESULT WINAPI iterator_hstring_get_Current( IIterator_HSTRING *iface, HS
     return IVectorView_HSTRING_GetAt(impl->view, impl->index, value);
 }
 
-static HRESULT WINAPI iterator_hstring_get_HasCurrent( IIterator_HSTRING *iface, BOOL *value )
+static HRESULT WINAPI iterator_hstring_get_HasCurrent( IIterator_HSTRING *iface, boolean *value )
 {
     struct iterator_hstring *impl = impl_from_IIterator_HSTRING(iface);
 
@@ -123,7 +123,7 @@ static HRESULT WINAPI iterator_hstring_get_HasCurrent( IIterator_HSTRING *iface,
     return S_OK;
 }
 
-static HRESULT WINAPI iterator_hstring_MoveNext( IIterator_HSTRING *iface, BOOL *value )
+static HRESULT WINAPI iterator_hstring_MoveNext( IIterator_HSTRING *iface, boolean *value )
 {
     struct iterator_hstring *impl = impl_from_IIterator_HSTRING(iface);
 
@@ -735,7 +735,7 @@ HRESULT vector_hstring_create_copy( IIterable_HSTRING *iterable, IVector_HSTRING
     struct vector_hstring *impl;
     IIterator_HSTRING *iterator;
     UINT32 capacity = 0;
-    BOOL available;
+    boolean available;
     HRESULT hr;
 
     TRACE("iterable %p, out %p.\n", iterable, out);
@@ -865,7 +865,7 @@ static HRESULT WINAPI iterator_inspectable_get_Current( IIterator_IInspectable *
     return IVectorView_IInspectable_GetAt(impl->view, impl->index, value);
 }
 
-static HRESULT WINAPI iterator_inspectable_get_HasCurrent( IIterator_IInspectable *iface, BOOL *value )
+static HRESULT WINAPI iterator_inspectable_get_HasCurrent( IIterator_IInspectable *iface, boolean *value )
 {
     struct iterator_inspectable *impl = impl_from_IIterator_IInspectable(iface);
 
@@ -875,7 +875,7 @@ static HRESULT WINAPI iterator_inspectable_get_HasCurrent( IIterator_IInspectabl
     return S_OK;
 }
 
-static HRESULT WINAPI iterator_inspectable_MoveNext( IIterator_IInspectable *iface, BOOL *value )
+static HRESULT WINAPI iterator_inspectable_MoveNext( IIterator_IInspectable *iface, boolean *value )
 {
     struct iterator_inspectable *impl = impl_from_IIterator_IInspectable(iface);
 
diff --git a/include/windows.foundation.collections.idl b/include/windows.foundation.collections.idl
index 680d7803cc8..2a8fd55be7d 100644
--- a/include/windows.foundation.collections.idl
+++ b/include/windows.foundation.collections.idl
@@ -148,8 +148,8 @@ cpp_quote("#endif")
             interface IIterator<T> : IInspectable
             {
                 [propget] HRESULT Current([out, retval] T *value);
-                [propget] HRESULT HasCurrent([out, retval] BOOL *value);
-                HRESULT MoveNext([out, retval] BOOL *value);
+                [propget] HRESULT HasCurrent([out, retval] boolean *value);
+                HRESULT MoveNext([out, retval] boolean *value);
                 HRESULT GetMany([in] UINT32 items_size, [out] T *items, [out, retval] UINT32 *value);
             }