diff --git a/brouter-util/src/main/java/btools/util/BitCoderContext.java b/brouter-util/src/main/java/btools/util/BitCoderContext.java
index 7299189..1482207 100644
--- a/brouter-util/src/main/java/btools/util/BitCoderContext.java
+++ b/brouter-util/src/main/java/btools/util/BitCoderContext.java
@@ -309,12 +309,12 @@ public class BitCoderContext {
     for (int i = 0; i < 31; i++) {
       int value = ctx.decodeVarBits();
       int v0 = (1 << i) + 3;
-      if (!(v0 == value))
+      if (v0 != value)
         throw new RuntimeException("value mismatch value=" + value + "v0=" + v0);
     }
     for (int i = 0; i < 100000; i += 13) {
       int value = ctx.decodeVarBits();
-      if (!(value == i))
+      if (value != i)
         throw new RuntimeException("value mismatch i=" + i + "v=" + value);
     }
   }
diff --git a/config/pmd/pmd-ruleset.xml b/config/pmd/pmd-ruleset.xml
index 1c89924..b8cd1ed 100644
--- a/config/pmd/pmd-ruleset.xml
+++ b/config/pmd/pmd-ruleset.xml
@@ -24,7 +24,6 @@
         <exclude name="EmptyControlStatement" />
         <exclude name="ForLoopCanBeForeach" />
         <exclude name="LiteralsFirstInComparisons" />
-        <exclude name="LogicInversion" />
         <exclude name="MissingOverride" />
         <exclude name="OneDeclarationPerLine" />
         <exclude name="OverrideBothEqualsAndHashcode" />