diff --git a/research/fraginternals.py b/research/fraginternals.py
index 07003f645..23f0b191e 100644
--- a/research/fraginternals.py
+++ b/research/fraginternals.py
@@ -477,6 +477,10 @@ class Station():
 		# Detect Msg3/4 assumig WPA2 is used --- XXX support WPA1 as well
 		is_msg3_or_4 = key_secure != 0
 
+		# Ignore group key handshake
+		if key_type == 0:
+			return None
+
 		# Inject any fragments before authenticating
 		if not self.txed_before_auth:
 			log(STATUS, "Action.StartAuth", color="green")