diff --git a/newlib/libc/ctype/mkcaseconv b/newlib/libc/ctype/mkcaseconv
index ab0571d8f..a455aed16 100755
--- a/newlib/libc/ctype/mkcaseconv
+++ b/newlib/libc/ctype/mkcaseconv
@@ -89,7 +89,7 @@ then
 	diff=-1
   }
   item () {
-	if [ "$1" == "#error" ]
+	if [ "$1" = "#error" ]
 	then	echo "$*"
 		return
 	fi