diff --git a/java/java-impl/src/com/intellij/refactoring/util/RefactoringUtil.java b/java/java-impl/src/com/intellij/refactoring/util/RefactoringUtil.java
index 4d725b7759b6..1da9d5095981 100644
--- a/java/java-impl/src/com/intellij/refactoring/util/RefactoringUtil.java
+++ b/java/java-impl/src/com/intellij/refactoring/util/RefactoringUtil.java
@@ -1204,13 +1204,13 @@ public class RefactoringUtil {
   }
 
   @Nullable
-  public static PsiTypeParameterList createTypeParameterListWithUsedTypeParameters(final PsiTypeParameterList fromList,
+  public static PsiTypeParameterList createTypeParameterListWithUsedTypeParameters(@Nullable final PsiTypeParameterList fromList,
                                                                                    @NotNull final PsiElement... elements) {
     return createTypeParameterListWithUsedTypeParameters(fromList, Condition.TRUE, elements);
   }
 
   @Nullable
-  public static PsiTypeParameterList createTypeParameterListWithUsedTypeParameters(final PsiTypeParameterList fromList,
+  public static PsiTypeParameterList createTypeParameterListWithUsedTypeParameters(@Nullable final PsiTypeParameterList fromList,
                                                                                    Condition<PsiTypeParameter> filter,
                                                                                    @NotNull final PsiElement... elements) {
     if (elements.length == 0) return null;