diff --git a/platform/util/src/com/intellij/util/containers/ContainerUtil.java b/platform/util/src/com/intellij/util/containers/ContainerUtil.java
index f954137a570f..2b19021c1685 100644
--- a/platform/util/src/com/intellij/util/containers/ContainerUtil.java
+++ b/platform/util/src/com/intellij/util/containers/ContainerUtil.java
@@ -2407,7 +2407,7 @@ public class ContainerUtil extends ContainerUtilRt {
     return true;
   }
 
-  @Nullable
+  @Contract("null -> null; !null -> !null")
   public static <T> List<T> trimToSize(@Nullable List<T> list) {
     if (list == null) return null;
     if (list.isEmpty()) return emptyList();