diff --git a/network/grsync/grsync.SlackBuild b/network/grsync/grsync.SlackBuild
index c4d09274d1..92f7490f77 100644
--- a/network/grsync/grsync.SlackBuild
+++ b/network/grsync/grsync.SlackBuild
@@ -71,7 +71,7 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-CFLAGS="$SLKCFLAGS" \
+CFLAGS="$SLKCFLAGS -fcommon" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \
   --prefix=/usr \