diff --git a/java/compiler/impl/src/com/intellij/compiler/server/BuildManager.java b/java/compiler/impl/src/com/intellij/compiler/server/BuildManager.java
index 448d1e61c2d2..dd6d4a4b2a8f 100644
--- a/java/compiler/impl/src/com/intellij/compiler/server/BuildManager.java
+++ b/java/compiler/impl/src/com/intellij/compiler/server/BuildManager.java
@@ -47,6 +47,7 @@ import com.intellij.openapi.projectRoots.impl.JavaAwareProjectJdkTableImpl;
 import com.intellij.openapi.roots.ModuleRootAdapter;
 import com.intellij.openapi.roots.ModuleRootEvent;
 import com.intellij.openapi.roots.ModuleRootManager;
+import com.intellij.openapi.roots.ProjectRootManager;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.util.ShutDownTracker;
 import com.intellij.openapi.util.SystemInfo;
@@ -180,19 +181,46 @@ public class BuildManager implements ApplicationComponent{
         if (PowerSaveMode.isEnabled()) {
           return false;
         }
+        List<Project> activeProjects = null;
         for (VFileEvent event : events) {
           if (!event.isFromRefresh() && !(event.getRequestor() instanceof SavingRequestor)) {
             continue;
           }
           final VirtualFile eventFile = event.getFile();
-          if (eventFile != null && ProjectCoreUtil.isProjectOrWorkspaceFile(eventFile)) {
+          if (eventFile == null || ProjectCoreUtil.isProjectOrWorkspaceFile(eventFile)) {
             continue;
           }
-          return true;
+          
+          if (activeProjects == null) {
+            activeProjects = getActiveProjects();
+            if (activeProjects.isEmpty()) {
+              return false;
+            }
+          }
+          // todo: probably we do not need this excessive filtering
+          for (Project project : activeProjects) {
+            if (!project.isInitialized() || ProjectRootManager.getInstance(project).getFileIndex().isInContent(eventFile)) {
+              return true;
+            }
+          }
         }
         return false;
       }
 
+      private List<Project> getActiveProjects() {
+        final Project[] projects = myProjectManager.getOpenProjects();
+        if (projects.length == 0) {
+          return Collections.emptyList();
+        }
+        final List<Project> projectList = new ArrayList<Project>();
+        for (Project project : projects) {
+          if (project.isDefault() || project.isDisposed()) {
+            continue;
+          }
+          projectList.add(project);
+        }
+        return projectList;
+      }
     });
 
     ShutDownTracker.getInstance().registerShutdownTask(new Runnable() {