diff --git a/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshAllExternalProjectsAction.java b/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshAllExternalProjectsAction.java
index 8344fe09fec6..6f5e0e6d7155 100644
--- a/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshAllExternalProjectsAction.java
+++ b/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshAllExternalProjectsAction.java
@@ -29,6 +29,7 @@ import com.intellij.openapi.externalSystem.statistics.ExternalSystemActionsColle
 import com.intellij.openapi.externalSystem.util.ExternalSystemBundle;
 import com.intellij.openapi.externalSystem.util.ExternalSystemUtil;
 import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.project.DumbAware;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.util.containers.ContainerUtil;
@@ -42,7 +43,7 @@ import java.util.List;
  *
  * @author Denis Zhdanov
  */
-public class RefreshAllExternalProjectsAction extends AnAction implements AnAction.TransparentUpdate {
+public class RefreshAllExternalProjectsAction extends AnAction implements AnAction.TransparentUpdate, DumbAware {
 
   public RefreshAllExternalProjectsAction() {
     getTemplatePresentation().setText(ExternalSystemBundle.message("action.refresh.all.projects.text", "external"));
diff --git a/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshExternalProjectAction.java b/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshExternalProjectAction.java
index c85eb3695915..b7643402c022 100644
--- a/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshExternalProjectAction.java
+++ b/platform/external-system-impl/src/com/intellij/openapi/externalSystem/action/RefreshExternalProjectAction.java
@@ -15,6 +15,7 @@ import com.intellij.openapi.externalSystem.util.ExternalSystemBundle;
 import com.intellij.openapi.externalSystem.util.ExternalSystemUtil;
 import com.intellij.openapi.externalSystem.view.ExternalSystemNode;
 import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.project.DumbAware;
 import com.intellij.openapi.project.Project;
 import com.intellij.util.containers.ContainerUtil;
 import org.jetbrains.annotations.NotNull;
@@ -27,7 +28,7 @@ import java.util.List;
  *
  * @author Vladislav.Soroka
  */
-public class RefreshExternalProjectAction extends ExternalSystemNodeAction<AbstractExternalEntityData> {
+public class RefreshExternalProjectAction extends ExternalSystemNodeAction<AbstractExternalEntityData> implements DumbAware {
 
   public RefreshExternalProjectAction() {
     super(AbstractExternalEntityData.class);