diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index ffd330c74ec..b392122b778 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -837,12 +837,14 @@ bool BitcodeReader::ParseMetadata() {
       SmallString<8> Name;
       Name.resize(RecordLength-1);
       unsigned Kind = Record[0];
+      (void) Kind;
       for (unsigned i = 1; i != RecordLength; ++i)
         Name[i-1] = Record[i];
       MetadataContext &TheMetadata = Context.getMetadata();
       unsigned ExistingKind = TheMetadata.getMDKind(Name.str());
       if (ExistingKind == 0) {
         unsigned NewKind = TheMetadata.registerMDKind(Name.str());
+        (void) NewKind;
         assert (Kind == NewKind 
                 && "Unable to handle custom metadata mismatch!");
       } else {