diff --git a/examples/tqt3reference/Makefile b/examples/tqt3reference/Makefile
index b3caed5..1a1ccf5 100644
--- a/examples/tqt3reference/Makefile
+++ b/examples/tqt3reference/Makefile
@@ -12,8 +12,8 @@ CC       = gcc
 CXX      = g++
 LEX      = flex
 YACC     = yacc
-CFLAGS   = -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -O2 -D_REENTRANT  -DQT_NO_DEBUG -DQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT
-CXXFLAGS = -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -O2 -D_REENTRANT  -DQT_NO_DEBUG -DQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT
+CFLAGS   = -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -O2 -D_REENTRANT  -DQT_NO_DEBUG -DTQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT
+CXXFLAGS = -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -O2 -D_REENTRANT  -DQT_NO_DEBUG -DTQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT
 LEXFLAGS = 
 YACCFLAGS= -d
 INCPATH  = -I/usr/share/tqt3/mkspecs/default -I. -I/usr/include/tqt3 -I/usr/include/tqt -I/opt/trinity/include -I/usr/include/tqt3