diff --git a/plugins/javaFX/src/org/jetbrains/plugins/javaFX/JavaFxProjectSdkSetupValidator.java b/plugins/javaFX/src/org/jetbrains/plugins/javaFX/JavaFxProjectSdkSetupValidator.java
index 5750be0dad7a..9641b34a3a5a 100644
--- a/plugins/javaFX/src/org/jetbrains/plugins/javaFX/JavaFxProjectSdkSetupValidator.java
+++ b/plugins/javaFX/src/org/jetbrains/plugins/javaFX/JavaFxProjectSdkSetupValidator.java
@@ -4,6 +4,7 @@ import com.intellij.codeInsight.daemon.ProjectSdkSetupValidator;
 import com.intellij.codeInsight.daemon.impl.JavaProjectSdkSetupValidator;
 import com.intellij.openapi.module.Module;
 import com.intellij.openapi.module.ModuleUtilCore;
+import com.intellij.openapi.project.DumbService;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.roots.ui.configuration.ClasspathEditor;
 import com.intellij.openapi.roots.ui.configuration.ProjectSettingsService;
@@ -33,6 +34,9 @@ public class JavaFxProjectSdkSetupValidator implements ProjectSdkSetupValidator
     if (javaErrorMessage != null) {
       return javaErrorMessage;
     }
+    if (DumbService.isDumb(project)) {
+      return null;
+    }
     final PsiClass nodeClass =
       JavaPsiFacade.getInstance(project).findClass(JavaFxCommonNames.JAVAFX_SCENE_NODE, GlobalSearchScope.allScope(project));
     if (nodeClass == null) {