--- ./caputils/ws80211_utils.c	2017-10-10 17:50:57.000000000 +0000
+++ ../ws80211_utils.c	2017-10-18 08:19:26.903580180 +0000
@@ -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;