diff --git a/src/common/fontcmn.cpp b/src/common/fontcmn.cpp
index 4f0a4a6014..b0e175ca56 100644
--- a/src/common/fontcmn.cpp
+++ b/src/common/fontcmn.cpp
@@ -389,7 +389,8 @@ bool wxFontBase::operator==(const wxFont& font) const
             // in wxGTK1 GetPixelSize() calls GetInternalFont() which uses
             // operator==() resulting in infinite recursion so we can't use it
             // in that port
-#if !defined(__WXGTK__) || defined(__WXGTK20__)
+            // in wxQT, GetPixelSize is too slow to be used here
+#if (!defined(__WXGTK__) || defined(__WXGTK20__)) && !defined(__WXQT__)
             GetPixelSize() == font.GetPixelSize() &&
 #endif
             GetFamily() == font.GetFamily() &&