diff --git a/java/java-analysis-impl/src/com/intellij/codeInspection/unnecessaryModuleDependency/UnnecessaryModuleDependencyInspection.java b/java/java-analysis-impl/src/com/intellij/codeInspection/unnecessaryModuleDependency/UnnecessaryModuleDependencyInspection.java
index 50f6fcd3c415..19152b8f59ea 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInspection/unnecessaryModuleDependency/UnnecessaryModuleDependencyInspection.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInspection/unnecessaryModuleDependency/UnnecessaryModuleDependencyInspection.java
@@ -33,6 +33,17 @@ public class UnnecessaryModuleDependencyInspection extends GlobalInspectionTool
       final RefModule refModule = (RefModule)refEntity;
       final Module module = refModule.getModule();
       final ModuleRootManager moduleRootManager = ModuleRootManager.getInstance(module);
+      boolean onlyGeneratedSources = true;
+      for (ContentEntry entry : moduleRootManager.getContentEntries()) {
+        for (SourceFolder folder : entry.getSourceFolders()) {
+          if (!JavaProjectRootsUtil.isForGeneratedSources(folder)) {
+            onlyGeneratedSources = false;
+            break;
+          }
+        }
+      }
+      if (onlyGeneratedSources) return null;
+
       final OrderEntry[] declaredDependencies = moduleRootManager.getOrderEntries();
 
       final List<CommonProblemDescriptor> descriptors = new ArrayList<>();
diff --git a/java/java-tests/testSrc/com/intellij/java/codeInspection/UnnecessaryModuleDependencyInspectionTest.kt b/java/java-tests/testSrc/com/intellij/java/codeInspection/UnnecessaryModuleDependencyInspectionTest.kt
index 7aaa20ad3030..4c39bd66e740 100644
--- a/java/java-tests/testSrc/com/intellij/java/codeInspection/UnnecessaryModuleDependencyInspectionTest.kt
+++ b/java/java-tests/testSrc/com/intellij/java/codeInspection/UnnecessaryModuleDependencyInspectionTest.kt
@@ -16,6 +16,8 @@ import com.intellij.testFramework.InspectionTestUtil
 import com.intellij.testFramework.PsiTestUtil
 import com.intellij.testFramework.createGlobalContextForTool
 import com.intellij.testFramework.fixtures.JavaCodeInsightFixtureTestCase
+import org.jetbrains.jps.model.java.JavaSourceRootType
+import org.jetbrains.jps.model.java.JpsJavaExtensionService
 import org.junit.Assert
 
 class UnnecessaryModuleDependencyInspectionTest : JavaCodeInsightFixtureTestCase() {
@@ -108,6 +110,29 @@ class UnnecessaryModuleDependencyInspectionTest : JavaCodeInsightFixtureTestCase
                         presentation.problemDescriptors.joinToString { problem -> problem.descriptionTemplate })
   }
 
+  fun testDuplicatedDependencies() {
+    val mod1 = PsiTestUtil.addModule(project, JavaModuleType.getModuleType(), "mod1", myFixture.tempDirFixture.findOrCreateDir("mod1"))
+    val mod2 = PsiTestUtil.addModule(project, JavaModuleType.getModuleType(), "mod2", myFixture.tempDirFixture.findOrCreateDir("mod2"))
+    val mod3 = PsiTestUtil.addModule(project, JavaModuleType.getModuleType(), "mod3", myFixture.tempDirFixture.findOrCreateDir("mod3"))
+    ModuleRootModificationUtil.updateModel(mod3) {
+      val contentEntry = it.contentEntries[0]
+      contentEntry.removeSourceFolder(contentEntry.sourceFolders[0])
+      contentEntry.addSourceFolder(myFixture.tempDirFixture.findOrCreateDir("mod3"),
+                                   JavaSourceRootType.SOURCE,
+                                   JpsJavaExtensionService.getInstance().createSourceRootProperties("", true))
+    }
+
+    ModuleRootModificationUtil.addDependency(mod2, mod1, DependencyScope.COMPILE, true)
+    ModuleRootModificationUtil.addDependency(mod1, myModule, DependencyScope.COMPILE, true)
+
+    ModuleRootModificationUtil.addDependency(mod3, mod1)
+    ModuleRootModificationUtil.addDependency(mod3, mod2)
+
+    myFixture.addClass("public class Class0 {}")
+    myFixture.addFileToProject("mod3/Class3.java", "public class Class3 extends Class0 {}")
+    assertInspectionProducesZeroResults()
+  }
+
   fun testDeepExportedDependenciesNoDirectDependency() {
     deepDepends()
     assertInspectionProducesZeroResults()