diff --git a/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyAnalayzer.java b/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyAnalayzer.java
index 4287104..3337239 100644
--- a/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyAnalayzer.java
+++ b/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyAnalayzer.java
@@ -2,6 +2,9 @@ package org.apache.lucene.russian.morphology.analayzer;
 
 import org.apache.lucene.analysis.Analyzer;
 import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.LowerCaseFilter;
+import org.apache.lucene.analysis.standard.StandardTokenizer;
+import org.apache.lucene.analysis.standard.StandardFilter;
 
 import java.io.Reader;
 import java.io.IOException;
@@ -14,6 +17,9 @@ public class RussianMorphlogyAnalayzer  extends Analyzer {
     }
 
     public TokenStream tokenStream(String fieldName, Reader reader) {
-        return null;  //To change body of implemented methods use File | Settings | File Templates.
+        TokenStream result = new StandardTokenizer(reader);
+        result = new StandardFilter(result);
+        result = new LowerCaseFilter(result);
+        return new RussianMorphlogyFilter(result,suffixEvristics);
     }
 }
diff --git a/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyFilter.java b/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyFilter.java
index 08bd435..b324064 100644
--- a/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyFilter.java
+++ b/src/main/java/org/apache/lucene/russian/morphology/analayzer/RussianMorphlogyFilter.java
@@ -10,7 +10,7 @@ import java.io.IOException;
 public class RussianMorphlogyFilter extends TokenFilter {
     private SuffixEvristics suffixEvristics;
 
-    public RussianMorphlogyFilter(TokenStream tokenStream, SuffixEvristics suffixEvristics) throws IOException {
+    public RussianMorphlogyFilter(TokenStream tokenStream, SuffixEvristics suffixEvristics) {
         super(tokenStream);
         this.suffixEvristics = suffixEvristics;
     }
@@ -18,7 +18,7 @@ public class RussianMorphlogyFilter extends TokenFilter {
     public Token next(final Token reusableToken) throws IOException {
         Token nextToken = input.next(reusableToken);
         if(nextToken == null || nextToken.term().length() == 0) return nextToken;
-        String word = nextToken.term().toLowerCase();
+        String word = nextToken.term();
         Character testC = word.charAt(0);
         if (Character.UnicodeBlock.of(testC) != Character.UnicodeBlock.CYRILLIC){
             return  nextToken;