diff --git a/idea/idea-completion/testData/basic/common/KT33903_1.kt b/idea/idea-completion/testData/basic/common/KT33903_1.kt
index 4c41260c1ef..7b90b514dd4 100644
--- a/idea/idea-completion/testData/basic/common/KT33903_1.kt
+++ b/idea/idea-completion/testData/basic/common/KT33903_1.kt
@@ -1,3 +1,4 @@
+// FIR_COMPARISON
 import Obj.foo
 import Obj.foo
 
diff --git a/idea/idea-completion/testData/basic/common/KT33903_2.kt b/idea/idea-completion/testData/basic/common/KT33903_2.kt
index 8729b3e16d6..955bdeeeb20 100644
--- a/idea/idea-completion/testData/basic/common/KT33903_2.kt
+++ b/idea/idea-completion/testData/basic/common/KT33903_2.kt
@@ -1,3 +1,4 @@
+// FIR_COMPARISON
 import Obj.foo
 import Obj.foo