diff --git a/clang/lib/ARCMigrate/ARCMT.cpp b/clang/lib/ARCMigrate/ARCMT.cpp
index 14e13ba58cfa..9c4c2f2df684 100644
--- a/clang/lib/ARCMigrate/ARCMT.cpp
+++ b/clang/lib/ARCMigrate/ARCMT.cpp
@@ -42,7 +42,7 @@ bool CapturedDiagList::clearDiagnostic(ArrayRef<unsigned> IDs,
       while (I != List.end() && I->getLevel() == DiagnosticsEngine::Note)
         ++I;
       // Clear the diagnostic and any notes following it.
-      List.erase(eraseS, I);
+      I = List.erase(eraseS, I);
       continue;
     }