1 files changed, 1 insertions, 1 deletions
diff --git a/a-tools.c b/a-tools.c
index e8d36b5..dd77777 100755
--- a/a-tools.c
+++ b/a-tools.c
@@ -70,7 +70,7 @@ char *strcol(char *s, char *d, int c) {
 }
 
 int strnumcol(const char *s, char *d) {
-  char *s1;
+  const char *s1;
   int i, l;
 
   // let's do some checks: