diff --git a/activemq-client/src/main/grammar/SelectorParser.jj b/activemq-client/src/main/grammar/SelectorParser.jj
index 6ccb113176..435b2d4eb1 100755
--- a/activemq-client/src/main/grammar/SelectorParser.jj
+++ b/activemq-client/src/main/grammar/SelectorParser.jj
@@ -121,7 +121,7 @@ public class SelectorParser {
         }
     }
 
-    private BooleanExpression asBooleanExpression(Expression value) throws ParseException  {
+    private static BooleanExpression asBooleanExpression(Expression value) throws ParseException  {
         if (value instanceof BooleanExpression) {
             return (BooleanExpression) value;
         }
diff --git a/pom.xml b/pom.xml
index 9fccc40fa2..5a413b088c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -136,7 +136,7 @@
     <maven-install-plugin-version>2.5.2</maven-install-plugin-version>
     <maven-shade-plugin-version>3.3.0</maven-shade-plugin-version>
     <findbugs-maven-plugin-version>3.0.5</findbugs-maven-plugin-version>
-    <javacc-maven-plugin-version>2.6</javacc-maven-plugin-version>
+    <javacc-maven-plugin-version>3.0.1</javacc-maven-plugin-version>
     <cobertura-maven-plugin-version>2.7</cobertura-maven-plugin-version>
     <taglist-maven-plugin-version>3.0.0</taglist-maven-plugin-version>
     <build-helper-maven-plugin-version>3.3.0</build-helper-maven-plugin-version>