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-rw-r--r--Src/subst.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/subst.c b/Src/subst.c
index 484b55b4d..ea2c50bde 100644
--- a/Src/subst.c
+++ b/Src/subst.c
@@ -2102,7 +2102,7 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int ssub)
 		    {
 			int zero = 1;
 			/* Calculate length in possibly multibyte chars */
-			int charlen = MB_METASTRLEN(val);
+			unsigned int charlen = MB_METASTRLEN(val);
 
 			if (charlen < fwidth) {
 			    char *valprefend = val;