diff --git a/qmlglsink.cmake b/qmlglsink.cmake
index 7798b271f3141469e8985a3db84734a0a7bca811..4ed0c49a4c5725f5053bb6732570654e2ae013c5 100644
--- a/qmlglsink.cmake
+++ b/qmlglsink.cmake
@@ -41,7 +41,7 @@ elseif(APPLE)
 elseif(IOS)
 	target_compile_definitions(gst_plugins_good PUBLIC HAVE_QT_MAC)
 elseif(WIN32)
-	target_compile_definitions(gst_plugins_good PUBLIC HAVE_QT_WIN32)
+	target_compile_definitions(gst_plugins_good PUBLIC HAVE_QT_WIN32 HAVE_QT_QPA_HEADER)
 
 	# TODO: use FindOpenGL?
 	target_link_libraries(gst_plugins_good PUBLIC opengl32.lib user32.lib)
diff --git a/qmlglsink.pri b/qmlglsink.pri
index e23fd4de29c1468e218537f7080fdf9c46ca8495..29bb9d27c394e3a9e18813ff80b5704993feae90 100644
--- a/qmlglsink.pri
+++ b/qmlglsink.pri
@@ -8,7 +8,7 @@ LinuxBuild {
 } else:iOSBuild {
     DEFINES += HAVE_QT_IOS
 } else:WindowsBuild {
-    DEFINES += HAVE_QT_WIN32
+    DEFINES += HAVE_QT_WIN32 HAVE_QT_QPA_HEADER
     LIBS += opengl32.lib user32.lib
 } else:AndroidBuild {
     DEFINES += HAVE_QT_ANDROID