diff --git a/compiler/tests/org/jetbrains/jet/codegen/FunctionGenTest.java b/compiler/tests/org/jetbrains/jet/codegen/FunctionGenTest.java
index 8ab99d48757..7b5a7a33e7a 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/FunctionGenTest.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/FunctionGenTest.java
@@ -39,7 +39,7 @@ public class FunctionGenTest extends CodegenTestCase {
         loadText("fun foo(x: String?, y: Any?) = x + y");
         String text = generateToText();
         assertTrue(text.contains(".stringPlus"));
-        System.out.println(text);
+//        System.out.println(text);
         Method foo = generateFunction();
         assertEquals("something239", foo.invoke(null, "something", 239));
         assertEquals("null239", foo.invoke(null, null, 239));
@@ -52,7 +52,7 @@ public class FunctionGenTest extends CodegenTestCase {
         loadText("fun foo(x: String, y: Any?) = x + y + 120");
         String text = generateToText();
         assertFalse(text.contains(".stringPlus"));
-        System.out.println(text);
+//        System.out.println(text);
         Method foo = generateFunction();
         assertEquals("something239120", foo.invoke(null, "something", 239));
         assertEquals("null239120", foo.invoke(null, null, 239));
diff --git a/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java b/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java
index 6dfec5e3e79..9fda35ee5ad 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java
@@ -334,7 +334,7 @@ public class PrimitiveTypesTest extends CodegenTestCase {
                  "    System.out?.println(f(six))\n" +
                  "    return \"OK\"" +
                  "}");
-        System.out.println(generateToText());
+//        System.out.println(generateToText());
         blackBox();
     }
 }
diff --git a/compiler/tests/org/jetbrains/jet/runtime/JetNpeTest.java b/compiler/tests/org/jetbrains/jet/runtime/JetNpeTest.java
index 2f3c350b6a0..a4ad31bfa9b 100644
--- a/compiler/tests/org/jetbrains/jet/runtime/JetNpeTest.java
+++ b/compiler/tests/org/jetbrains/jet/runtime/JetNpeTest.java
@@ -25,7 +25,7 @@ public class JetNpeTest extends CodegenTestCase {
 
     public void testNull () throws Exception {
         loadText("fun box() = if(null.sure() == 10) \"OK\" else \"fail\"");
-        System.out.println(generateToText());
+//        System.out.println(generateToText());
         Method box = generateFunction("box");
         assertThrows(box, NullPointerException.class, null);
     }