diff --git a/plugins/maven/src/main/java/org/jetbrains/idea/maven/project/MavenProjectsManager.java b/plugins/maven/src/main/java/org/jetbrains/idea/maven/project/MavenProjectsManager.java
index e3c6d4122081..7f7c875ed605 100644
--- a/plugins/maven/src/main/java/org/jetbrains/idea/maven/project/MavenProjectsManager.java
+++ b/plugins/maven/src/main/java/org/jetbrains/idea/maven/project/MavenProjectsManager.java
@@ -281,6 +281,7 @@ public abstract class MavenProjectsManager extends MavenSimpleProjectComponent
     }
   }
 
+  @RequiresReadLockAbsence
   private void initProjectsTree() {
     if (projectsTreeInitialized.get()) return;
     initLock.lock();