diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/ANTLR.java b/src/main/org/apache/tools/ant/taskdefs/optional/ANTLR.java
index 7efd88c45..6b4d34de3 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/ANTLR.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/ANTLR.java
@@ -289,7 +289,7 @@ public class ANTLR extends Task {
             }
         } else {
             log("Skipped grammar file. Generated file " + generatedFile
-                + "is newer.", Project.MSG_VERBOSE);
+                + " is newer.", Project.MSG_VERBOSE);
         }
     }