diff --git a/lib/ulib/javaproperties b/lib/ulib/javaproperties
index 330662c..59961ee 100644
--- a/lib/ulib/javaproperties
+++ b/lib/ulib/javaproperties
@@ -119,8 +119,8 @@ function write_properties() {
 function __norm_properties() {
     echo '# -*- coding: iso-8859-1 -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=iso-8859-1'
     _nl2lf |
-    grep -v $'^[ \t]*#' |
-    grep -v $'^[ \t]*$' |
+    cgrep -v $'^[ \t]*#' |
+    cgrep -v $'^[ \t]*$' |
     csort -k1 -t= |
     csed $'
 s/\x80/\\\\u0080/g; s/\x81/\\\\u0081/g; s/\x82/\\\\u0082/g; s/\x83/\\\\u0083/g;