diff --git a/platform/lang-api/src/com/intellij/execution/actions/RunConfigurationProducer.java b/platform/lang-api/src/com/intellij/execution/actions/RunConfigurationProducer.java
index 8c0a551238ee..233cc66a7189 100644
--- a/platform/lang-api/src/com/intellij/execution/actions/RunConfigurationProducer.java
+++ b/platform/lang-api/src/com/intellij/execution/actions/RunConfigurationProducer.java
@@ -205,7 +205,7 @@ public abstract class RunConfigurationProducer<T extends RunConfiguration> {
   @Nullable
   public RunnerAndConfigurationSettings findExistingConfiguration(ConfigurationContext context) {
     final RunManager runManager = RunManager.getInstance(context.getProject());
-    final List<RunnerAndConfigurationSettings> configurations = runManager.getConfigurationSettingsList(myConfigurationFactory.getType());
+    final List<RunnerAndConfigurationSettings> configurations = getConfigurationSettingsList(runManager);
     for (RunnerAndConfigurationSettings configurationSettings : configurations) {
       if (isConfigurationFromContext((T) configurationSettings.getConfiguration(), context)) {
         return configurationSettings;
@@ -214,6 +214,14 @@ public abstract class RunConfigurationProducer<T extends RunConfiguration> {
     return null;
   }
 
+  /**
+   * @return list of configurations that may match this producer
+   */
+  @NotNull
+  protected List<RunnerAndConfigurationSettings> getConfigurationSettingsList(@NotNull RunManager runManager) {
+    return runManager.getConfigurationSettingsList(myConfigurationFactory.getType());
+  }
+
   protected RunnerAndConfigurationSettings cloneTemplateConfiguration(@NotNull final ConfigurationContext context) {
     return cloneTemplateConfigurationStatic(context, myConfigurationFactory);
   }
diff --git a/python/src/com/jetbrains/python/testing/universalTests/PyUniversalTests.kt b/python/src/com/jetbrains/python/testing/universalTests/PyUniversalTests.kt
index 94a7d3030c2b..a7af9b43b4ad 100644
--- a/python/src/com/jetbrains/python/testing/universalTests/PyUniversalTests.kt
+++ b/python/src/com/jetbrains/python/testing/universalTests/PyUniversalTests.kt
@@ -20,6 +20,7 @@ package com.jetbrains.python.testing.universalTests
 import com.google.gson.Gson
 import com.intellij.execution.Location
 import com.intellij.execution.PsiLocation
+import com.intellij.execution.RunManager
 import com.intellij.execution.RunnerAndConfigurationSettings
 import com.intellij.execution.actions.ConfigurationContext
 import com.intellij.execution.actions.ConfigurationFromContext
@@ -325,6 +326,11 @@ object PyUniversalTestsConfigurationProducer : RunConfigurationProducer<PyUniver
     return true
   }
 
+  override fun getConfigurationSettingsList(runManager: RunManager): List<RunnerAndConfigurationSettings> {
+    // Some configurations have same type but produces different class (doctest, for example)
+    // to prevent ClassCastException we only allow our configurations
+    return super.getConfigurationSettingsList(runManager).filter { it.configuration is PyUniversalTestConfiguration }
+  }
 
   /**
    * Find concrete element to be used as test target.