diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt
index b659f66d354..d0c9867def9 100644
--- a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt
+++ b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt
@@ -177,7 +177,7 @@ class K2JSCompilerArguments : CommonCompilerArguments() {
     var irPerFile: Boolean by FreezableVar(false)
 
     @Argument(value = "-Xir-new-ir2js", description = "New fragment-based ir2js")
-    var irNewIr2Js: Boolean by FreezableVar(false)
+    var irNewIr2Js: Boolean by FreezableVar(true)
 
     @Argument(
         value = "-Xinclude",