diff --git a/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java b/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java
index d21dd307ac7a..eea9d00d4d53 100644
--- a/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java
+++ b/platform/lang-impl/src/com/intellij/execution/ExecutionHelper.java
@@ -20,6 +20,7 @@ import com.intellij.execution.configurations.GeneralCommandLine;
 import com.intellij.execution.executors.DefaultRunExecutor;
 import com.intellij.execution.process.OSProcessHandler;
 import com.intellij.execution.process.ProcessHandler;
+import com.intellij.execution.process.ProcessOutput;
 import com.intellij.execution.ui.RunContentDescriptor;
 import com.intellij.ide.errorTreeView.NewErrorTreeViewPanel;
 import com.intellij.openapi.application.ApplicationManager;
@@ -147,7 +148,7 @@ public class ExecutionHelper {
   }
 
   public static void showOutput(@NotNull final Project myProject,
-                                @NotNull final Output output,
+                                @NotNull final ProcessOutput output,
                                 @NotNull final String tabDisplayName,
                                 @Nullable final VirtualFile file,
                                 final boolean activateWindow) {
diff --git a/platform/platform-api/src/com/intellij/execution/process/ProcessOutput.java b/platform/platform-api/src/com/intellij/execution/process/ProcessOutput.java
index 64efbcadc41e..8260200733c5 100644
--- a/platform/platform-api/src/com/intellij/execution/process/ProcessOutput.java
+++ b/platform/platform-api/src/com/intellij/execution/process/ProcessOutput.java
@@ -17,6 +17,7 @@ package com.intellij.execution.process;
 
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.text.StringUtil;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
@@ -83,12 +84,12 @@ public class ProcessOutput {
   }
 
   /**
-   * If exit code is nonzero or the process timed out, logs stdout and exit code and returns false,
+   * If exit code is nonzero or the process timed out, logs stderr and exit code and returns false,
    * else just returns true.
    * @param logger where to put error information
    * @return true iff exit code is zero
    */
-  public boolean checkSuccess(Logger logger) {
+  public boolean checkSuccess(@NotNull final Logger logger) {
     if (getExitCode() != 0) {
       logger.info(getStderr() + (isTimeout()? "\nTimed out" : "\nExit code " + getExitCode()));
       return false;