diff --git a/multimedia/smpeg/smpeg.SlackBuild b/multimedia/smpeg/smpeg.SlackBuild
index 19a3a4f6c6..b2560d4b2b 100644
--- a/multimedia/smpeg/smpeg.SlackBuild
+++ b/multimedia/smpeg/smpeg.SlackBuild
@@ -69,9 +69,11 @@ 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 {} \;
 
+sed -i "s|^gtv_LDADD.*|gtv_LDADD = @GTK_LIBS@ libsmpeg.la -lX11|" Makefile.am
+
 ./autogen.sh
 
-CFLAGS="$SLKCFLAGS" \
+CFLAGS="$SLKCFLAGS -Wno-error=narrowing" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \
   --prefix=/usr \