diff --git a/include/llvm/LinkTimeOptimizer.h b/include/llvm/LinkTimeOptimizer.h
index fe87ae0acb7..164232d2098 100644
--- a/include/llvm/LinkTimeOptimizer.h
+++ b/include/llvm/LinkTimeOptimizer.h
@@ -20,8 +20,6 @@
 #include <set>
 #include <llvm/ADT/hash_map>
 
-#define LLVM_LTO_VERSION 1
-
 namespace llvm {
 
   class Module;
@@ -150,6 +148,6 @@ namespace llvm {
 /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer.
 /// extern "C" helps, because dlopen() interface uses name to find the symbol.
 extern "C"
-llvm::LinkTimeOptimizer *createLLVMOptimizer(unsigned VERSION = LLVM_LTO_VERSION);
+llvm::LinkTimeOptimizer *createLLVMOptimizer();
 
 #endif
diff --git a/tools/lto/lto.cpp b/tools/lto/lto.cpp
index bc752340d50..e7e00e7f62c 100644
--- a/tools/lto/lto.cpp
+++ b/tools/lto/lto.cpp
@@ -45,11 +45,8 @@
 using namespace llvm;
 
 extern "C"
-llvm::LinkTimeOptimizer *createLLVMOptimizer(unsigned VERSION)
+llvm::LinkTimeOptimizer *createLLVMOptimizer()
 {
-  if (VERSION != LLVM_LTO_VERSION)
-    return NULL;
-
   llvm::LTO *l = new llvm::LTO();
   return l;
 }