diff --git a/brouter-codec/src/main/java/btools/codec/TagValueValidator.java b/brouter-codec/src/main/java/btools/codec/TagValueValidator.java
index 4b88dfc..70220d6 100644
--- a/brouter-codec/src/main/java/btools/codec/TagValueValidator.java
+++ b/brouter-codec/src/main/java/btools/codec/TagValueValidator.java
@@ -6,11 +6,11 @@ public interface TagValueValidator {
    * @param tagValueSet the way description to check
    * @return 0 = nothing, 1=no matching, 2=normal
    */
-  public int accessType(byte[] tagValueSet);
+  int accessType(byte[] tagValueSet);
 
-  public byte[] unify(byte[] tagValueSet, int offset, int len);
+  byte[] unify(byte[] tagValueSet, int offset, int len);
 
-  public boolean isLookupIdxUsed(int idx);
+  boolean isLookupIdxUsed(int idx);
 
-  public void setDecodeForbidden(boolean decodeForbidden);
+  void setDecodeForbidden(boolean decodeForbidden);
 }
diff --git a/brouter-mapaccess/src/main/java/btools/mapaccess/OsmPos.java b/brouter-mapaccess/src/main/java/btools/mapaccess/OsmPos.java
index 15ece82..e0c262b 100644
--- a/brouter-mapaccess/src/main/java/btools/mapaccess/OsmPos.java
+++ b/brouter-mapaccess/src/main/java/btools/mapaccess/OsmPos.java
@@ -7,16 +7,16 @@ package btools.mapaccess;
 
 
 public interface OsmPos {
-  public int getILat();
+  int getILat();
 
-  public int getILon();
+  int getILon();
 
-  public short getSElev();
+  short getSElev();
 
-  public double getElev();
+  double getElev();
 
-  public int calcDistance(OsmPos p);
+  int calcDistance(OsmPos p);
 
-  public long getIdFromPos();
+  long getIdFromPos();
 
 }
diff --git a/brouter-util/src/main/java/btools/util/MixCoderDataInputStream.java b/brouter-util/src/main/java/btools/util/MixCoderDataInputStream.java
index 31acac9..60a0524 100644
--- a/brouter-util/src/main/java/btools/util/MixCoderDataInputStream.java
+++ b/brouter-util/src/main/java/btools/util/MixCoderDataInputStream.java
@@ -37,7 +37,7 @@ public final class MixCoderDataInputStream extends DataInputStream {
     return lastValue;
   }
 
-  public final boolean decodeBit() throws IOException {
+  public boolean decodeBit() throws IOException {
     fillBuffer();
     boolean value = ((b & 1) != 0);
     b >>>= 1;
@@ -45,7 +45,7 @@ public final class MixCoderDataInputStream extends DataInputStream {
     return value;
   }
 
-  public final int decodeVarBits2() throws IOException {
+  public int decodeVarBits2() throws IOException {
     int range = 0;
     while (!decodeBit()) {
       range = 2 * range + 1;
@@ -58,7 +58,7 @@ public final class MixCoderDataInputStream extends DataInputStream {
    *
    * @see #encodeBounded
    */
-  public final int decodeBounded(int max) throws IOException {
+  public int decodeBounded(int max) throws IOException {
     int value = 0;
     int im = 1; // integer mask
     while ((value | im) <= max) {
@@ -75,7 +75,7 @@ public final class MixCoderDataInputStream extends DataInputStream {
    * @see #encodeVarBits
    */
 
-  public final int decodeVarBits() throws IOException {
+  public int decodeVarBits() throws IOException {
     fillBuffer();
     int b12 = b & 0xfff;
     int len = vl_length[b12];
diff --git a/brouter-util/src/main/java/btools/util/MixCoderDataOutputStream.java b/brouter-util/src/main/java/btools/util/MixCoderDataOutputStream.java
index 99f8aec..ea32b5c 100644
--- a/brouter-util/src/main/java/btools/util/MixCoderDataOutputStream.java
+++ b/brouter-util/src/main/java/btools/util/MixCoderDataOutputStream.java
@@ -59,7 +59,7 @@ public final class MixCoderDataOutputStream extends DataOutputStream {
     }
   }
 
-  public final void encodeBit(boolean value) throws IOException {
+  public void encodeBit(boolean value) throws IOException {
     if (bm == 0x100) {
       writeByte((byte) b);
       bm = 1;
@@ -71,7 +71,7 @@ public final class MixCoderDataOutputStream extends DataOutputStream {
     bm <<= 1;
   }
 
-  public final void encodeVarBits(int value) throws IOException {
+  public void encodeVarBits(int value) throws IOException {
     int range = 0;
     while (value > range) {
       encodeBit(false);
@@ -82,7 +82,7 @@ public final class MixCoderDataOutputStream extends DataOutputStream {
     encodeBounded(range, value);
   }
 
-  public final void encodeBounded(int max, int value) throws IOException {
+  public void encodeBounded(int max, int value) throws IOException {
     int im = 1; // integer mask
     while (im <= max) {
       if (bm == 0x100) {
diff --git a/brouter-util/src/main/java/btools/util/ProgressListener.java b/brouter-util/src/main/java/btools/util/ProgressListener.java
index 88179ee..193d5bc 100644
--- a/brouter-util/src/main/java/btools/util/ProgressListener.java
+++ b/brouter-util/src/main/java/btools/util/ProgressListener.java
@@ -2,7 +2,7 @@ package btools.util;
 
 
 public interface ProgressListener {
-  public void updateProgress(String task, int progress);
+  void updateProgress(String task, int progress);
 
-  public boolean isCanceled();
+  boolean isCanceled();
 }
diff --git a/config/pmd/pmd-ruleset.xml b/config/pmd/pmd-ruleset.xml
index 8b25040..8444511 100644
--- a/config/pmd/pmd-ruleset.xml
+++ b/config/pmd/pmd-ruleset.xml
@@ -34,7 +34,6 @@
         <exclude name="SimplifyBooleanReturns" />
         <exclude name="UncommentedEmptyConstructor" />
         <exclude name="UncommentedEmptyMethodBody" />
-        <exclude name="UnnecessaryModifier" />
         <exclude name="UnusedFormalParameter" />
         <exclude name="UnusedLocalVariable" />
         <exclude name="UnusedPrivateField" />