diff --git a/platform/util/src/com/intellij/util/containers/ContainerUtil.java b/platform/util/src/com/intellij/util/containers/ContainerUtil.java
index 9f63e177e0a6..4beefadad7e9 100644
--- a/platform/util/src/com/intellij/util/containers/ContainerUtil.java
+++ b/platform/util/src/com/intellij/util/containers/ContainerUtil.java
@@ -1576,7 +1576,7 @@ public class ContainerUtil extends ContainerUtilRt {
     }
   }
 
-  public static <T> void sort(@NotNull List<T> list, @NotNull Comparator<T> comparator) {
+  public static <T> void sort(@NotNull List<T> list, @NotNull Comparator<? super T> comparator) {
     int size = list.size();
 
     if (size < 2) return;
diff --git a/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java b/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java
index 11e953de6dcf..4168b5b226c1 100644
--- a/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java
+++ b/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java
@@ -92,7 +92,7 @@ public class MostlySingularMultiMap<K, V> implements Serializable {
     return myMap.isEmpty();
   }
 
-  public boolean processForKey(@NotNull K key, @NotNull Processor<V> p) {
+  public boolean processForKey(@NotNull K key, @NotNull Processor<? super V> p) {
     return processValue(p, myMap.get(key));
   }