diff --git a/compiler.c b/compiler.c
index 9c02612..cd66052 100644
--- a/compiler.c
+++ b/compiler.c
@@ -708,7 +708,7 @@ int main(int argc, char *argv[])
 
     LLVMPassManagerRef passManager = LLVMCreatePassManager();
 
-    //LLVMAddInstructionCombiningPass(passManager);
+    LLVMAddInstructionCombiningPass(passManager);
     LLVMAddCFGSimplificationPass(passManager);
     LLVMAddReassociatePass(passManager);
     LLVMAddPromoteMemoryToRegisterPass(passManager);