diff --git a/SysBuild/guibased/graphviz b/SysBuild/guibased/graphviz
index 659b6d4..52be874 100644
--- a/SysBuild/guibased/graphviz
+++ b/SysBuild/guibased/graphviz
@@ -118,8 +118,10 @@ mk() {
 		    --with-tcl \
 		    --with-tk \
 		    --with-x &&
-	sed -i -e "s%X11R7/lib%X11R7/lib64%g" libtool  &&
-	find . -name "Makefile" -exec sed -i -e "s%/lib/libexpat%/lib64/libexpat%" {} \; &&
+	if [ "$MK64BIT" == "true" ]; then
+		sed -i -e "s%X11R7/lib%X11R7/lib64%g" libtool  &&
+		find . -name "Makefile" -exec sed -i -e "s%/lib/libexpat%/lib64/libexpat%" {} \; 
+	fi
 	make
 	make -k DESTDIR=$TMPROOT install
 }