diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index fb0518b2ec4..8a8d68e55a8 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -1128,7 +1128,7 @@ void ELFObjectWriterImpl::WriteObject(MCAssembler &Asm,
   // ... then all of the sections ...
   DenseMap<const MCSection*, uint64_t> SectionOffsetMap;
 
-  DenseMap<const MCSection*, uint8_t> SectionIndexMap;
+  DenseMap<const MCSection*, uint32_t> SectionIndexMap;
 
   unsigned Index = 1;
   for (MCAssembler::const_iterator it = Asm.begin(),