diff --git a/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerRunnable.java b/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerRunnable.java
index 60e41cc79635..73469a86b34e 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerRunnable.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerRunnable.java
@@ -15,7 +15,10 @@
  */
 package com.intellij.psi.impl.source.codeStyle;
 
-import com.intellij.formatting.*;
+import com.intellij.formatting.CoreFormatterUtil;
+import com.intellij.formatting.FormattingMode;
+import com.intellij.formatting.FormattingModel;
+import com.intellij.formatting.FormattingModelBuilder;
 import com.intellij.injected.editor.DocumentWindow;
 import com.intellij.lang.ASTNode;
 import com.intellij.lang.LanguageFormatting;
@@ -127,7 +130,7 @@ abstract class CodeStyleManagerRunnable<T> {
   protected abstract T doPerform(int offset, TextRange range);
 
   private static boolean isInsidePlainComment(int offset, @Nullable PsiElement element) {
-    if (!(element instanceof PsiComment) || element instanceof PsiDocCommentBase || !element.getTextRange().contains(offset)) {
+    if (!(element instanceof PsiComment) || element instanceof PsiDocCommentBase || !element.getTextRange().contains(offset - 1)) {
       return false;
     }