diff --git a/Makefile b/Makefile
index 3540d20..3ea759c 100644
--- a/Makefile
+++ b/Makefile
@@ -4,11 +4,8 @@ PREFIX := .
 
 CP := cp -f
 
-CFLAGS   := -std=c89 -Wall -Wextra -Wpedantic -Wshadow -Wundef
-CPPFLAGS := -D_FORTIFY_SOURCE=2
-
-export CFLAGS
-export CPPFLAGS
+export CFLAGS   := -std=c89 -Wall -Wextra -Wpedantic -Wshadow -Wundef
+export CPPFLAGS := -D_FORTIFY_SOURCE=2
 
 all: plug/libplug.so src/plugin