diff --git a/Makefile.linux b/Makefile.linux
index be9bd59..f51f3bd 100644
--- a/Makefile.linux
+++ b/Makefile.linux
@@ -12,9 +12,9 @@ all :  $(APPS) direwolf.desktop direwolf.conf
 	@echo " "
 
 CC := gcc
-CFLAGS := -O3 -pthread -Igeotranz
+CFLAGS += -O3 -pthread -Igeotranz
 
-LDFLAGS := -lm -lpthread -lrt
+LDFLAGS += -lm -lpthread -lrt