diff --git a/lib/Archive/ArchiveWriter.cpp b/lib/Archive/ArchiveWriter.cpp
index 2269464..336a2bd 100644
--- a/lib/Archive/ArchiveWriter.cpp
+++ b/lib/Archive/ArchiveWriter.cpp
@@ -306,8 +306,10 @@
   // Write the header
   ARFile.write((char*)&Hdr, sizeof(Hdr));
 
+#ifndef NDEBUG
   // Save the starting position of the symbol tables data content.
   unsigned startpos = ARFile.tellp();
+#endif
 
   // Write out the symbols sequentially
   for ( Archive::SymTabType::iterator I = symTab.begin(), E = symTab.end();
@@ -321,8 +323,10 @@
     ARFile.write(I->first.data(), I->first.length());
   }
 
+#ifndef NDEBUG
   // Now that we're done with the symbol table, get the ending file position
   unsigned endpos = ARFile.tellp();
+#endif
 
   // Make sure that the amount we wrote is what we pre-computed. This is
   // critical for file integrity purposes.