diff --git a/bacnet-stack/test/ptransfer.mak b/bacnet-stack/test/ptransfer.mak
index ac07e1db..5b5153f4 100644
--- a/bacnet-stack/test/ptransfer.mak
+++ b/bacnet-stack/test/ptransfer.mak
@@ -2,7 +2,7 @@
 CC      = gcc
 SRC_DIR = ../src
 INCLUDES = -I../include -I.
-DEFINES = -DBIG_ENDIAN=0 -PRINT_ENABLE=1 -DTEST -DTEST_PRIVATE_TRANSFER
+DEFINES = -DBIG_ENDIAN=0 -DPRINT_ENABLE=1 -DTEST -DTEST_PRIVATE_TRANSFER
 
 CFLAGS  = -Wall $(INCLUDES) $(DEFINES) -g