experiment
diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt
index b1d78bf..a7df7f6 100644
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt
+++ b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt
@@ -79,7 +79,7 @@
     }
 
     put(LIST_TARGETS, arguments.listTargets)
-    put(OPTIMIZATION, arguments.optimization)
+    put(OPTIMIZATION, arguments.optimization && !arguments.debug)
     put(DEBUG, arguments.debug)
     // TODO: remove after 1.4 release.
     if (arguments.lightDebugDeprecated) {