diff --git a/def.h b/def.h
index 2e5a4c1..efd4ae6 100644
--- a/def.h
+++ b/def.h
@@ -19,7 +19,6 @@
  namespace format {
 #define NULLPNTR nullptr
 #define EMPTY -1
-#define FALSE false
 
 #ifdef DBG_LOG
 #define PRINT_LOG(x) std::cout << (x)