diff --git a/python/educational-core/src/com/jetbrains/edu/learning/checker/StudyTestRunner.java b/python/educational-core/src/com/jetbrains/edu/learning/checker/StudyTestRunner.java
deleted file mode 100644
index 9fd0b70a232a..000000000000
--- a/python/educational-core/src/com/jetbrains/edu/learning/checker/StudyTestRunner.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package com.jetbrains.edu.learning.checker;
-
-import com.intellij.execution.ExecutionException;
-import com.intellij.execution.configurations.GeneralCommandLine;
-import com.intellij.openapi.project.Project;
-import com.intellij.openapi.vfs.VirtualFile;
-import com.jetbrains.edu.learning.courseFormat.tasks.Task;
-import org.jetbrains.annotations.NotNull;
-
-public abstract class StudyTestRunner {protected final Task myTask;
-  protected final VirtualFile myTaskDir;
-
-  public StudyTestRunner(@NotNull final Task task, @NotNull final VirtualFile taskDir) {
-    myTask = task;
-    myTaskDir = taskDir;
-  }
-
-  public abstract Process createCheckProcess(@NotNull final Project project, @NotNull final String executablePath) throws ExecutionException;
-
-  public abstract GeneralCommandLine getCommandLine();
-
-}
diff --git a/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudySmartChecker.java b/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudySmartChecker.java
index 59c850b661e6..0848d459bebe 100644
--- a/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudySmartChecker.java
+++ b/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudySmartChecker.java
@@ -36,7 +36,7 @@ public class PyStudySmartChecker {
                                 @NotNull final VirtualFile answerFile,
                                 @NotNull final TaskFile answerTaskFile,
                                 @NotNull final TaskFile usersTaskFile,
-                                @NotNull final StudyTestRunner testRunner,
+                                @NotNull final PyStudyTestRunner testRunner,
                                 @NotNull final VirtualFile virtualFile,
                                 @NotNull final Document usersDocument) {
     VirtualFile fileWindows = null;
@@ -83,7 +83,7 @@ public class PyStudySmartChecker {
   }
 
   public static void runSmartTestProcess(@NotNull final VirtualFile taskDir,
-                                         @NotNull final StudyTestRunner testRunner,
+                                         @NotNull final PyStudyTestRunner testRunner,
                                          @NotNull final String taskFileName,
                                          @NotNull final TaskFile taskFile,
                                          @NotNull final Project project) {
diff --git a/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTaskChecker.java b/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTaskChecker.java
index 909a3ecb4f90..6b2f117354e8 100644
--- a/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTaskChecker.java
+++ b/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTaskChecker.java
@@ -46,7 +46,7 @@ public class PyStudyTaskChecker extends StudyTaskChecker<PyCharmTask> {
         StudyCheckUtils.flushWindows(myTask, taskDir);
         latch.countDown();
       }));
-    final StudyTestRunner testRunner = new PyStudyTestRunner(myTask, taskDir);
+    final PyStudyTestRunner testRunner = new PyStudyTestRunner(myTask, taskDir);
     try {
       final VirtualFile fileToCheck = getTaskVirtualFile(myTask, taskDir);
       if (fileToCheck != null) {
diff --git a/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTestRunner.java b/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTestRunner.java
index b111077d23f4..ea3bcb7a511c 100644
--- a/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTestRunner.java
+++ b/python/educational-python/Edu-Python/src/com/jetbrains/edu/learning/checker/PyStudyTestRunner.java
@@ -18,12 +18,15 @@ import org.jetbrains.annotations.NotNull;
 import java.io.File;
 import java.util.Map;
 
-public class PyStudyTestRunner extends StudyTestRunner {
+public class PyStudyTestRunner {
   private static final String PYTHONPATH = "PYTHONPATH";
+  @NotNull private final Task myTask;
+  @NotNull private final VirtualFile myTaskDir;
   private GeneralCommandLine myCommandLine;
 
   PyStudyTestRunner(@NotNull final Task task, @NotNull final VirtualFile taskDir) {
-    super(task, taskDir);
+    myTask = task;
+    myTaskDir = taskDir;
   }
 
   public Process createCheckProcess(@NotNull final Project project, @NotNull final String executablePath) throws ExecutionException {
@@ -56,7 +59,6 @@ public class PyStudyTestRunner extends StudyTestRunner {
     return null;
   }
 
-  @Override
   public GeneralCommandLine getCommandLine() {
     return myCommandLine;
   }