diff --git a/src/codegen.cpp b/src/codegen.cpp
index c5d8144143..a1c89c239b 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -1983,10 +1983,10 @@ static LLVMValueRef ir_render_overflow_op(CodeGen *g, IrExecutable *executable,
             add_sub_mul = AddSubMulAdd;
             break;
         case IrOverflowOpSub:
-            add_sub_mul = AddSubMulAdd;
+            add_sub_mul = AddSubMulSub;
             break;
         case IrOverflowOpMul:
-            add_sub_mul = AddSubMulAdd;
+            add_sub_mul = AddSubMulMul;
             break;
         case IrOverflowOpShl:
             return render_shl_with_overflow(g, instruction);