diff --git a/examples/sample.source.MHEG5/Makefile b/examples/sample.source.MHEG5/Makefile
index 7fe0f49..43e6b90 100644
--- a/examples/sample.source.MHEG5/Makefile
+++ b/examples/sample.source.MHEG5/Makefile
@@ -472,7 +472,7 @@
 
 ASN_CONVERTER=../../skeletons/converter-sample.c
 $(TARGET).o: $(ASN_CONVERTER)
-	$(CC) $(CFLAGS) -Dasn_DEF=asn_DEF_InterchangedObject -o $(TARGET).o -c $(ASN_CONVERTER)
+	$(CC) $(CFLAGS) -DPDU=InterchangedObject -o $(TARGET).o -c $(ASN_CONVERTER)
 
 distclean: clean
 	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
diff --git a/examples/sample.source.PKIX1/Makefile b/examples/sample.source.PKIX1/Makefile
index 6eb381f..8ea848d 100644
--- a/examples/sample.source.PKIX1/Makefile
+++ b/examples/sample.source.PKIX1/Makefile
@@ -375,7 +375,7 @@
 
 ASN_CONVERTER=../../skeletons/converter-sample.c
 $(TARGET).o: $(ASN_CONVERTER)
-	$(CC) $(CFLAGS) -Dasn_DEF=asn_DEF_Certificate -o $(TARGET).o -c $(ASN_CONVERTER)
+	$(CC) $(CFLAGS) -DPDU=Certificate -o $(TARGET).o -c $(ASN_CONVERTER)
 
 distclean: clean
 	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
diff --git a/examples/sample.source.TAP3/Makefile b/examples/sample.source.TAP3/Makefile
index 2483359..7b4f397 100644
--- a/examples/sample.source.TAP3/Makefile
+++ b/examples/sample.source.TAP3/Makefile
@@ -702,7 +702,7 @@
 
 ASN_CONVERTER=../../skeletons/converter-sample.c
 $(TARGET).o: $(ASN_CONVERTER)
-	$(CC) $(CFLAGS) -Dasn_DEF=asn_DEF_DataInterChange -o $(TARGET).o -c $(ASN_CONVERTER)
+	$(CC) $(CFLAGS) -DPDU=DataInterChange -o $(TARGET).o -c $(ASN_CONVERTER)
 
 distclean: clean
 	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)