--- a/cfgfile.c
+++ b/cfgfile.c
@@ -45,9 +45,9 @@ stringmap config;
 extern options_t options ;
 
 int is_cfgdirective_valid(const char *s) {
-    char **t;
-    for (t = config_directives; *t != NULL; ++t)
-        if (strcmp(s, *t) == 0) return 1;
+    int t;
+    for (t = 0; config_directives[t] != NULL; t++)
+       if (strcmp(s, config_directives[t]) == 0) return 1;
     return 0;
 }
 
