diff --git a/desktop/wmphoto+/wmphoto+.SlackBuild b/desktop/wmphoto+/wmphoto+.SlackBuild
index 389db08ad1..c803df961c 100644
--- a/desktop/wmphoto+/wmphoto+.SlackBuild
+++ b/desktop/wmphoto+/wmphoto+.SlackBuild
@@ -54,7 +54,7 @@ find -L . \
 
 cd wmphoto
   make \
-    FLAGS="$SLKCFLAGS"
+    CC="gcc -fgnu89-inline $SLKCFLAGS"
 
 # Copy executable to the correct location
 mkdir -p $PKG/usr/bin