diff --git a/tools/llvm-ranlib/llvm-ranlib.cpp b/tools/llvm-ranlib/llvm-ranlib.cpp
index 1c372d5..a3cdc41 100644
--- a/tools/llvm-ranlib/llvm-ranlib.cpp
+++ b/tools/llvm-ranlib/llvm-ranlib.cpp
@@ -74,7 +74,8 @@
     if (!TheArchive)
       throw err_msg;
 
-    TheArchive->writeToDisk(true, false, false );
+    if (!TheArchive->writeToDisk(true, false, false, &err_msg ))
+      throw err_msg;
 
     if (Verbose)
       printSymbolTable(TheArchive);