diff --git a/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java b/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java
index 453cbcb0d6cd..e3fd53132f1d 100644
--- a/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java
+++ b/java/execution/openapi/src/com/intellij/execution/JavaExecutionUtil.java
@@ -28,13 +28,14 @@ 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.ProjectFileIndex;
+import com.intellij.openapi.roots.ProjectRootManager;
 import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.*;
 import com.intellij.psi.search.GlobalSearchScope;
-import com.intellij.psi.util.ClassUtil;
-import com.intellij.psi.util.PsiClassUtil;
-import com.intellij.psi.util.PsiTreeUtil;
+import com.intellij.psi.util.*;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -183,8 +184,14 @@ public class JavaExecutionUtil {
     return name == null || name.startsWith(ExecutionBundle.message("run.configuration.unnamed.name.prefix"));
   }
 
+  @Nullable
   public static Location stepIntoSingleClass(@NotNull final Location location) {
     PsiElement element = location.getPsiElement();
+    final VirtualFile virtualFile = PsiUtilCore.getVirtualFile(element);
+    final ProjectFileIndex fileIndex = ProjectRootManager.getInstance(location.getProject()).getFileIndex();
+    if (virtualFile == null || !fileIndex.isInSource(virtualFile)) {
+      return null;
+    }
     if (!(element instanceof PsiClassOwner)) {
       if (PsiTreeUtil.getParentOfType(element, PsiClass.class) != null) return location;
       element = PsiTreeUtil.getParentOfType(element, PsiClassOwner.class);
diff --git a/plugins/junit/src/com/intellij/execution/junit/JUnitConfigurationProducer.java b/plugins/junit/src/com/intellij/execution/junit/JUnitConfigurationProducer.java
index 4ee75003c200..799250e78baa 100644
--- a/plugins/junit/src/com/intellij/execution/junit/JUnitConfigurationProducer.java
+++ b/plugins/junit/src/com/intellij/execution/junit/JUnitConfigurationProducer.java
@@ -52,6 +52,9 @@ public abstract class JUnitConfigurationProducer extends JavaRunConfigurationPro
                           ? ((PsiMemberParameterizedLocation)contextLocation).getParamSetName() : null;
     assert contextLocation != null;
     Location location = JavaExecutionUtil.stepIntoSingleClass(contextLocation);
+    if (location == null) {
+      return false;
+    }
     final PsiElement element = location.getPsiElement();
     final PsiClass testClass = JUnitUtil.getTestClass(element);
     final PsiMethod testMethod = JUnitUtil.getTestMethod(element, false);
diff --git a/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfigurationProducer.java b/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfigurationProducer.java
index 864b9ebcf93f..0914e2b476dc 100644
--- a/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfigurationProducer.java
+++ b/plugins/testng/src/com/theoryinpractice/testng/configuration/TestNGConfigurationProducer.java
@@ -49,6 +49,9 @@ public abstract class TestNGConfigurationProducer extends JavaRunConfigurationPr
     final RunConfiguration predefinedConfiguration = context.getOriginalConfiguration(TestNGConfigurationType.getInstance());
     final Location contextLocation = context.getLocation();
     Location location = JavaExecutionUtil.stepIntoSingleClass(contextLocation);
+    if (location == null) {
+      return false;
+    }
     final PsiElement element = location.getPsiElement();
     RunnerAndConfigurationSettings template = RunManager.getInstance(location.getProject()).getConfigurationTemplate(getConfigurationFactory());
     final Module predefinedModule = ((TestNGConfiguration)template.getConfiguration()).getConfigurationModule().getModule();