diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index 549a509..9bb6462 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -130,7 +130,7 @@
     Write16(NumberOfSections);
 
   // e_shstrndx  = Section # of '.shstrtab'
-  if (NumberOfSections >= ELF::SHN_LORESERVE)
+  if (ShstrtabIndex >= ELF::SHN_LORESERVE)
     Write16(ELF::SHN_XINDEX);
   else
     Write16(ShstrtabIndex);