diff --git a/tools/bugpoint/BugDriver.cpp b/tools/bugpoint/BugDriver.cpp
index 7a2ce26..7ccbe0d 100644
--- a/tools/bugpoint/BugDriver.cpp
+++ b/tools/bugpoint/BugDriver.cpp
@@ -37,7 +37,7 @@
 
   // Next, delete all of the basic blocks.
   F->getBasicBlockList().clear();
-
+  F->setLinkage(GlobalValue::ExternalLinkage);
   assert(F->isExternal() && "This didn't make the function external!");
 }