diff --git a/modules/highgui/cmake/detect_gtk.cmake b/modules/highgui/cmake/detect_gtk.cmake
index 7c5939ed97..0ffa473d6a 100644
--- a/modules/highgui/cmake/detect_gtk.cmake
+++ b/modules/highgui/cmake/detect_gtk.cmake
@@ -41,3 +41,4 @@ if(WITH_GTK AND NOT HAVE_QT)
 endif()
 
 set(HAVE_GTK ${HAVE_GTK} PARENT_SCOPE)
+set(HAVE_GTK3 ${HAVE_GTK3} PARENT_SCOPE)