diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 98e8ee5..414769b 100644
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -222,7 +222,7 @@
       StartPassTimer(P);
       LoopPass *LP = dynamic_cast<LoopPass *>(P);
       assert (LP && "Invalid LPPassManager member");
-      LP->runOnLoop(CurrentLoop, *this);
+      Changed |= LP->runOnLoop(CurrentLoop, *this);
       StopPassTimer(P);
 
       if (Changed)