diff --git a/tools/fmpp/src/main/java/org/apache/drill/fmpp/mojo/FMPPMojo.java b/tools/fmpp/src/main/java/org/apache/drill/fmpp/mojo/FMPPMojo.java
index 92247bddd91..58428cd4c29 100644
--- a/tools/fmpp/src/main/java/org/apache/drill/fmpp/mojo/FMPPMojo.java
+++ b/tools/fmpp/src/main/java/org/apache/drill/fmpp/mojo/FMPPMojo.java
@@ -42,6 +42,7 @@
 /**
  * a maven plugin to run the freemarker generation incrementally
  * (if output has not changed, the files are not touched)
+ * @threadSafe
  * @goal generate
  * @phase generate-sources
  */