diff --git a/compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/CommandLineScriptUtils.java b/compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/CommandLineScriptUtils.java
index 51c6301ee00..d8e9f06fc58 100644
--- a/compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/CommandLineScriptUtils.java
+++ b/compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/CommandLineScriptUtils.java
@@ -32,6 +32,9 @@ public class CommandLineScriptUtils {
     private static final Name ARGS_NAME = Name.identifier("args");
     private static final JetTypeName ARGS_TYPE = JetTypeName.parse("jet.Array<jet.String>");
 
+    private CommandLineScriptUtils() {
+    }
+
     public static List<AnalyzerScriptParameter> scriptParameters() {
         AnalyzerScriptParameter argsParameter = new AnalyzerScriptParameter(ARGS_NAME, ARGS_TYPE);
         return Collections.singletonList(argsParameter);
diff --git a/compiler/tests/org/jetbrains/jet/codegen/GenerationUtils.java b/compiler/tests/org/jetbrains/jet/codegen/GenerationUtils.java
index 9e5b4220e84..50594685b8c 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/GenerationUtils.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/GenerationUtils.java
@@ -30,6 +30,9 @@ import java.util.Collections;
  */
 public class GenerationUtils {
 
+    private GenerationUtils() {
+    }
+
     public static ClassFileFactory compileFileGetClassFileFactoryForTest(@NotNull JetFile psiFile) {
         return compileFileGetGenerationStateForTest(psiFile).getFactory();
     }