diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index e940f4a57ea..c4fce2be6ee 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -1248,7 +1248,7 @@ bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
       AteExtraComma = true;
       return false;
     }
-    unsigned Idx;
+    unsigned Idx = 0;
     if (ParseUInt32(Idx)) return true;
     Indices.push_back(Idx);
   }