+++ a/capture/ws80211_utils.c
@@ -671,7 +671,7 @@
 
 	/* Update names of user created monitor interfaces */
 	while(fgets(line, sizeof(line), fh)) {
-		t = index(line, ':');
+		t = strchr(line, ':');
 		if (!t)
 			continue;
 		*t = 0;