diff --git a/examples/sample.source.PKIX1/Makefile b/examples/sample.source.PKIX1/Makefile
index 9a046468..c625ed8c 100644
--- a/examples/sample.source.PKIX1/Makefile
+++ b/examples/sample.source.PKIX1/Makefile
@@ -363,8 +363,9 @@ Attribute.c: regenerate.Makefile
 	@touch Attribute.c
 	make
 
-$(TARGET).o: ../../skeletons/asn-decoder-template.c
-	$(CC) $(CFLAGS) -o $(TARGET).o -c $<
+ASN_DECODER_TEMPLATE=../../skeletons/asn-decoder-template.c
+$(TARGET).o: $(ASN_DECODER_TEMPLATE)
+	$(CC) $(CFLAGS) -o $(TARGET).o -c $(ASN_DECODER_TEMPLATE)
 
 distclean: clean
 	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)