diff --git a/src/main/java/teetime/framework/AbstractStage.java b/src/main/java/teetime/framework/AbstractStage.java
index 63ef55465abade9299a4d0baff89c37c6c77d9c3..cabcdde306459205d8675dfbf1e2b4bdf9981d9b 100644
--- a/src/main/java/teetime/framework/AbstractStage.java
+++ b/src/main/java/teetime/framework/AbstractStage.java
@@ -124,7 +124,7 @@ public abstract class AbstractStage implements Stage {
 		this.connectUnconnectedOutputPorts();
 	}
 
-	public void onTerminating() throws Exception {
+	public void onTerminating() throws Exception { // NOPMD
 		// empty default implementation
 	}
 
diff --git a/src/main/java/teetime/framework/pipe/InterThreadPipe.java b/src/main/java/teetime/framework/pipe/InterThreadPipe.java
index a38e59519e8e3a16c2027fb0b14ff757273b75a3..7554ffa0b32cc6f5fa031848bd3922ee3b6bc642 100644
--- a/src/main/java/teetime/framework/pipe/InterThreadPipe.java
+++ b/src/main/java/teetime/framework/pipe/InterThreadPipe.java
@@ -34,7 +34,7 @@ public abstract class InterThreadPipe extends AbstractPipe {
 	}
 
 	@Override
-	public void reportNewElement() {
+	public void reportNewElement() { // NOPMD
 		// do nothing
 	}
 }