diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index f5804430ee2..5b16f6288bc 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -4714,7 +4714,7 @@ getConstantEvolvingPHIOperands(Instruction *UseInst, const Loop *L,
     // If this operand is already visited, reuse the prior result.
     P = PHIMap.lookup(OpInst);
     if (P) {
-      assert(!PHI || P == PHI && "inconsitent data flow");
+      assert((!PHI || P == PHI) && "inconsitent data flow");
       PHI = P;
       continue;
     }