diff --git a/wpa_supplicant/interworking.c b/wpa_supplicant/interworking.c
index 4a4269979..a649ea954 100644
--- a/wpa_supplicant/interworking.c
+++ b/wpa_supplicant/interworking.c
@@ -551,6 +551,7 @@ static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
 					break;
 				if (os_memcmp(pos, plmn, 3) == 0)
 					return 1; /* Found matching PLMN */
+				pos += 3;
 			}
 		}