diff --git a/compiler/testData/codegen/regressions/kt528.kt b/compiler/testData/codegen/regressions/kt528.kt
index d656fb2f6f7..39dcc7a0892 100644
--- a/compiler/testData/codegen/regressions/kt528.kt
+++ b/compiler/testData/codegen/regressions/kt528.kt
@@ -1,6 +1,5 @@
 package mask
 
-import std.io.*
 import java.io.*
 import java.util.*
 import java.util.Iterator as It
diff --git a/compiler/testData/codegen/regressions/kt529.kt b/compiler/testData/codegen/regressions/kt529.kt
index 546a345b1c7..55ba07dfc5e 100644
--- a/compiler/testData/codegen/regressions/kt529.kt
+++ b/compiler/testData/codegen/regressions/kt529.kt
@@ -1,6 +1,5 @@
 package mask
 
-import std.io.*
 import java.io.*
 import java.util.*
 
diff --git a/compiler/testData/codegen/regressions/kt533.kt b/compiler/testData/codegen/regressions/kt533.kt
index 3ad813a6e0b..d6e28177601 100644
--- a/compiler/testData/codegen/regressions/kt533.kt
+++ b/compiler/testData/codegen/regressions/kt533.kt
@@ -1,6 +1,5 @@
 package mask
 
-import std.io.*
 import java.io.*
 import java.util.*
 
diff --git a/compiler/testData/codegen/regressions/kt864.jet b/compiler/testData/codegen/regressions/kt864.jet
index 40bdba3dade..6771b2eb2cf 100644
--- a/compiler/testData/codegen/regressions/kt864.jet
+++ b/compiler/testData/codegen/regressions/kt864.jet
@@ -1,4 +1,3 @@
-import std.io.*
 import std.util.*
 import java.io.*
 import java.util.*
diff --git a/compiler/testData/compiler/smoke/Smoke.kt b/compiler/testData/compiler/smoke/Smoke.kt
index c5ece2faf60..840ee72ff76 100644
--- a/compiler/testData/compiler/smoke/Smoke.kt
+++ b/compiler/testData/compiler/smoke/Smoke.kt
@@ -1,7 +1,5 @@
 package Smoke
 
-import std.io.*
-
 fun main(args: Array<String>) {
     print(args)
 }