diff --git a/src/jitlayers.cpp b/src/jitlayers.cpp
index 0b47dfca507d2..ea21477c8f56c 100644
--- a/src/jitlayers.cpp
+++ b/src/jitlayers.cpp
@@ -608,7 +608,8 @@ CodeGenOpt::Level CodeGenOptLevelFor(int optlevel)
 #ifdef DISABLE_OPT
     return CodeGenOpt::None;
 #else
-    return optlevel < 2 ? CodeGenOpt::None :
+    return optlevel == 0 ? CodeGenOpt::None :
+        optlevel == 1 ? CodeGenOpt::Less :
         optlevel == 2 ? CodeGenOpt::Default :
         CodeGenOpt::Aggressive;
 #endif