diff --git a/rtgui/options.h b/rtgui/options.h
index 0bc421300..b8a71c9cb 100644
--- a/rtgui/options.h
+++ b/rtgui/options.h
@@ -20,12 +20,15 @@
 
 #include <set>
 #include <vector>
+#if defined __has_include
 #if __has_include(<gtkmm/enums.h>)
 #include <gtkmm/enums.h>
 #else
 #include <gtkmm-3.0/gtkmm/enums.h>
 #endif
-
+#else
+#include <gtkmm/enums.h>
+#endif
 #include "../rtengine/settings.h"
 #include <exception>