diff --git a/bindings/ocaml/executionengine/executionengine_ocaml.c b/bindings/ocaml/executionengine/executionengine_ocaml.c
index fc3848a1eb1..ec403380ef4 100644
--- a/bindings/ocaml/executionengine/executionengine_ocaml.c
+++ b/bindings/ocaml/executionengine/executionengine_ocaml.c
@@ -181,7 +181,7 @@ CAMLprim LLVMExecutionEngineRef
 llvm_ee_create_jit(LLVMModuleProviderRef MP) {
   LLVMExecutionEngineRef JIT;
   char *Error;
-  if (LLVMCreateJITCompiler(&JIT, MP, 0, &Error))
+  if (LLVMCreateJITCompiler(&JIT, MP, 3, &Error))
     llvm_raise(llvm_ee_error_exn, Error);
   return JIT;
 }
@@ -191,7 +191,7 @@ CAMLprim LLVMExecutionEngineRef
 llvm_ee_create_fast_jit(LLVMModuleProviderRef MP) {
   LLVMExecutionEngineRef JIT;
   char *Error;
-  if (LLVMCreateJITCompiler(&JIT, MP, 1, &Error))
+  if (LLVMCreateJITCompiler(&JIT, MP, 0, &Error))
     llvm_raise(llvm_ee_error_exn, Error);
   return JIT;
 }
diff --git a/lib/ExecutionEngine/ExecutionEngineBindings.cpp b/lib/ExecutionEngine/ExecutionEngineBindings.cpp
index 0ef85dd0369..83397a586d5 100644
--- a/lib/ExecutionEngine/ExecutionEngineBindings.cpp
+++ b/lib/ExecutionEngine/ExecutionEngineBindings.cpp
@@ -114,11 +114,12 @@ int LLVMCreateInterpreter(LLVMExecutionEngineRef *OutInterp,
 
 int LLVMCreateJITCompiler(LLVMExecutionEngineRef *OutJIT,
                           LLVMModuleProviderRef MP,
-                          CodeGenOpt::Level OptLevel,
+                          unsigned OptLevel,
                           char **OutError) {
   std::string Error;
-  if (ExecutionEngine *JIT = ExecutionEngine::createJIT(unwrap(MP), &Error, 0,
-                                                        OptLevel)) {
+  if (ExecutionEngine *JIT =
+      ExecutionEngine::createJIT(unwrap(MP), &Error, 0,
+                                 (CodeGenOpt::Level)OptLevel)) {
     *OutJIT = wrap(JIT);
     return 0;
   }