diff --git a/clang/lib/Analysis/CalledOnceCheck.cpp b/clang/lib/Analysis/CalledOnceCheck.cpp
index 2eff97640dfae7..6b7d3790e3e5dc 100644
--- a/clang/lib/Analysis/CalledOnceCheck.cpp
+++ b/clang/lib/Analysis/CalledOnceCheck.cpp
@@ -573,8 +573,8 @@ class CalledOnceChecker : public ConstStmtVisitor<CalledOnceChecker> {
         CheckConventionalParameters(CheckConventionalParameters),
         CurrentState(0) {
     initDataStructures();
-    assert(size() == 0 ||
-           !States.empty() && "Data structures are inconsistent");
+    assert((size() == 0 || !States.empty()) &&
+           "Data structures are inconsistent");
   }
 
   //===----------------------------------------------------------------------===//