diff --git a/spellchecker/src/com/intellij/spellchecker/engine/Transformation.java b/spellchecker/src/com/intellij/spellchecker/engine/Transformation.java
index 79a5fb88fde1..1d8bf1d96c1a 100644
--- a/spellchecker/src/com/intellij/spellchecker/engine/Transformation.java
+++ b/spellchecker/src/com/intellij/spellchecker/engine/Transformation.java
@@ -19,6 +19,7 @@ import com.intellij.util.containers.hash.HashSet;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
+import java.util.Locale;
 import java.util.Set;
 
 @SuppressWarnings({"ALL"})
@@ -26,10 +27,13 @@ public class Transformation {
   
   @Nullable
   public  String transform(@Nullable String word) {
-    if (word == null || word.trim().length() < 3) {
+    if (word == null) return null;
+    word = word.trim();
+    if (word.length() < 3) {
       return null;
     }
-    return word.trim().toLowerCase();
+
+    return word.toLowerCase(Locale.ENGLISH);
   }
 
   @Nullable
diff --git a/spellchecker/testData/inspection/commentsWithMistakes/SPITest2.java b/spellchecker/testData/inspection/commentsWithMistakes/SPITest2.java
new file mode 100644
index 000000000000..8043f3d11352
--- /dev/null
+++ b/spellchecker/testData/inspection/commentsWithMistakes/SPITest2.java
@@ -0,0 +1,3 @@
+class Foo {
+  int myInventory;
+}
\ No newline at end of file
diff --git a/spellchecker/testSrc/com/intellij/spellchecker/inspection/CommentsWithMistakesInspectionTest.java b/spellchecker/testSrc/com/intellij/spellchecker/inspection/CommentsWithMistakesInspectionTest.java
index e91ccf7f4778..e55efc411f14 100644
--- a/spellchecker/testSrc/com/intellij/spellchecker/inspection/CommentsWithMistakesInspectionTest.java
+++ b/spellchecker/testSrc/com/intellij/spellchecker/inspection/CommentsWithMistakesInspectionTest.java
@@ -15,6 +15,8 @@
  */
 package com.intellij.spellchecker.inspection;
 
+import java.util.Locale;
+
 /**
  * @author  Ekaterina Shliakhovetskaja
  */
@@ -28,6 +30,16 @@ public class CommentsWithMistakesInspectionTest extends SpellcheckerInspectionTe
     doTest("SPITest1.java");
   }
 
+  public void testJavaWithTurkishLocale() {
+    Locale locale = Locale.getDefault();
+    try {
+      Locale.setDefault(new Locale("tr", "TR"));
+      doTest("SPITest2.java");
+    } finally {
+      Locale.setDefault(locale);
+    }
+  }
+
   public void testXml() {
     doTest("A.xml");
   }