diff --git a/src/Compare/SSEGraph.hs b/src/Compare/SSEGraph.hs
index e2178d3c5dad9599b1e8cfe798c21981a7d0d550..12defaf10197de8396989ca6d66fba2c22425066 100644
--- a/src/Compare/SSEGraph.hs
+++ b/src/Compare/SSEGraph.hs
@@ -73,4 +73,4 @@ newtype SSEEdgeLabelKickoff = WithKickoff SSEEdgeLabel
 
 instance IsEpsilon SSEEdgeLabelKickoff where
   isEpsilon (WithKickoff l@(SSEEdgeLabel t))
-    = isEpsilon l || "kickoff" `T.isInfixOf` t
+    = isEpsilon l || ("kickoff" `T.isInfixOf` t && (not $ "ISR" `T.isInfixOf` t))