diff --git a/Makefile b/Makefile
index 17c5302..47f5075 100644
--- a/Makefile
+++ b/Makefile
@@ -6,11 +6,11 @@
 
 VERSION	= 1.60
 
-LIBS	= -lztxt
+LIBS	+= -lztxt
 INCLUDE	= -I../common -I.
 
 CC	= gcc
-CFLAGS	= -Wall -O2 -pipe $(INCLUDE)
+CFLAGS	+= -Wall -O2 -pipe $(INCLUDE)
 # GNU make is mandatory
 #MAKE	= make