diff --git a/tests/misc/c2str.c b/tests/misc/c2str.c
index 9a6ab0da..71f242bc 100644
--- a/tests/misc/c2str.c
+++ b/tests/misc/c2str.c
@@ -36,7 +36,7 @@ int isspc(int c)
 
 int main(int argc, char **argv)
 {
-    unsigned char l[1000], l2[1000], *p, *q, *p0;
+    char l[1000], l2[1000], *p, *q, *p0;
     FILE *fp, *op;
     int c, e, f, cmt, cmt_n;
     const char *r;
@@ -84,7 +84,7 @@ int main(int argc, char **argv)
         if (cmt) {
             fprintf(op, "%s", l);
             if (++cmt_n == 1)
-                fprintf(op, " (converted, do not edit this file)", l);
+                fprintf(op, " (converted, do not edit this file)");
             fprintf(op, "\n");
             if (cmt == 1)
                 cmt = 0;