diff --git a/makefile b/makefile
index 80c9c5c..d7f9c66 100644
--- a/makefile
+++ b/makefile
@@ -1,11 +1,12 @@
-ifeq ($(shell id -u), 0)
-	EXTENSION_DIR = /usr/share/nautilus-python/extensions
-	SCHEMA_DIR = /usr/share/glib-2.0/schemas
-else
-	EXTENSION_DIR = ~/.local/share/nautilus-python/extensions
-	SCHEMA_DIR = ~/.local/share/glib-2.0/schemas
+datadir = /usr/share
+
+ifneq ($(shell id -u), 0)
+datadir = ~/.local/share
 endif
 
+EXTENSION_DIR = $(datadir)/nautilus-python/extensions
+SCHEMA_DIR = $(datadir)/glib-2.0/schemas
+
 install:
 	install -d $(EXTENSION_DIR)
 	install Back.py $(EXTENSION_DIR)