diff --git a/Makefile b/Makefile
old mode 100644
new mode 100755
index ffa5beb..b619a38
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,10 @@
 CC=gcc
+GEANY_PLUGIN_DIR ?= ~/.config/geany/plugins/
 
 all:
 	$(CC) -c external-tools.c -fPIC `pkg-config --cflags geany`
 	$(CC) external-tools.o -o external-tools.so -shared `pkg-config --libs geany`
 install:
-	cp external-tools.so ~/.config/geany/plugins/
+	cp external-tools.so $GEANY_PLUGIN_DIR
 clean:
 	rm -f *.o *.so