diff --git a/lib/StaticAnalyzer/Core/BugReporter.cpp b/lib/StaticAnalyzer/Core/BugReporter.cpp
index 3936d56..b87c9eb 100644
--- a/lib/StaticAnalyzer/Core/BugReporter.cpp
+++ b/lib/StaticAnalyzer/Core/BugReporter.cpp
@@ -1742,7 +1742,7 @@
     if (!errorNode)
       continue;
     if (errorNode->isSink()) {
-      assert(false &&
+      llvm_unreachable(
            "BugType::isSuppressSink() should not be 'true' for sink end nodes");
       return 0;
     }