diff --git a/antlr4-maven-plugin/src/test/java/org/antlr/mojo/antlr4/Antlr4MojoTest.java b/antlr4-maven-plugin/src/test/java/org/antlr/mojo/antlr4/Antlr4MojoTest.java
index 6c700ed0b..f481f32ac 100644
--- a/antlr4-maven-plugin/src/test/java/org/antlr/mojo/antlr4/Antlr4MojoTest.java
+++ b/antlr4-maven-plugin/src/test/java/org/antlr/mojo/antlr4/Antlr4MojoTest.java
@@ -261,7 +261,7 @@ public class Antlr4MojoTest {
         ////////////////////////////////////////////////////////////////////////
 
         // modify the grammar to make checksum comparison detect a change
-        try(Change change = Change.of(lexerGrammar)) {
+        try(Change change = Change.of(lexerGrammar, "FOO: 'foo' ;")) {
             maven.executeMojo(session, project, exec);
 
             assertFalse(Arrays.equals(origTestLexerSum, checksum(genTestLexer)));
diff --git a/antlr4-maven-plugin/src/test/projects/importsStandard/src/main/antlr4/test/TestLexer.g4 b/antlr4-maven-plugin/src/test/projects/importsStandard/src/main/antlr4/test/TestLexer.g4
index 668b76496..c69c925ad 100644
--- a/antlr4-maven-plugin/src/test/projects/importsStandard/src/main/antlr4/test/TestLexer.g4
+++ b/antlr4-maven-plugin/src/test/projects/importsStandard/src/main/antlr4/test/TestLexer.g4
@@ -3,4 +3,4 @@ lexer grammar TestLexer;
 import TestBaseLexer;
 
 WS    :  Whitespace+              -> skip;
-TEXT  :  ~[<&]+ ; // match any 16 bit char other than < and &
\ No newline at end of file
+TEXT  :  ~[<&]+ ; // match any 16 bit char other than < and &