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-rw-r--r--subopt-helper.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/subopt-helper.h b/subopt-helper.h
index 29e7461b9c..dad3e4d0e5 100644
--- a/subopt-helper.h
+++ b/subopt-helper.h
@@ -44,7 +44,7 @@ typedef struct strarg_s
int int_non_neg( int * i );
int int_pos( int * i );
-int strargcmp(strarg_t *arg, char *str);
+int strargcmp(strarg_t *arg, const char *str);
int strargcasecmp(strarg_t *arg, char *str);
#endif