diff --git a/Makefile b/Makefile
index 295bfecedb..5a6a51c49e 100755
--- a/Makefile
+++ b/Makefile
@@ -357,7 +357,7 @@ datafiles: all
 update: 
 	@if [ -d CVS ]; then \
 		echo "Updating from CVS..." ; \
-		cvs -q update -Pd; \
+		cvs -q -z3 update -Pd; \
 		rm -f .version; \
 	else \
 		echo "Not CVS";  \