diff --git a/ChangeLog b/ChangeLog
index 94c70bd7..a51c2d21 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Sep 11 14:48:43 CEST 2001 Daniel Veillard <daniel@veillard.com>
+
+	* xsltproc/xsltproc.c: tell in usage that parameter strings
+	  need to be quoted 
+
 Tue Sep 11 13:42:49 CEST 2001 Daniel Veillard <daniel@veillard.com>
 
 	* libxslt/Makefile.am libxslt/transform.c: trying to close
diff --git a/xsltproc/xsltproc.c b/xsltproc/xsltproc.c
index 6d4304c6..e7578350 100644
--- a/xsltproc/xsltproc.c
+++ b/xsltproc/xsltproc.c
@@ -363,6 +363,7 @@ static void usage(const char *name) {
     printf("      --docbook: the input document is SGML docbook\n");
 #endif
     printf("      --param name value : pass a (parameter,value) pair\n");
+    printf("            string values must be quoted like \"'string'\"\n");
     printf("      --nonet refuse to fetch DTDs or entities over network\n");
     printf("      --warnnet warn against fetching over the network\n");
 #ifdef LIBXML_CATALOG_ENABLED