diff --git a/appl/popper/popper.h b/appl/popper/popper.h
index 8835a0de4..59b69a19f 100644
--- a/appl/popper/popper.h
+++ b/appl/popper/popper.h
@@ -96,11 +96,6 @@
 #define   K_LOCK_UN   LOCK_UN         /* Unlock */
 #endif
 
-#ifndef TRUE
-#define TRUE            1
-#define FALSE           0
-#endif
-
 #define MAXUSERNAMELEN  65
 #define MAXDROPLEN      64
 #define MAXLINELEN      1024