diff --git a/gst/dtmf/tone_detect.c b/gst/dtmf/tone_detect.c
index 8c1b5ad956..73a73ee98b 100644
--- a/gst/dtmf/tone_detect.c
+++ b/gst/dtmf/tone_detect.c
@@ -38,8 +38,12 @@
 #include <fcntl.h>
 #include "tone_detect.h"
 
+#ifndef FALSE
 #define FALSE   0
+#endif
+#ifndef TRUE
 #define TRUE    (!FALSE)
+#endif
 
 //#define USE_3DNOW