diff --git a/Makefile b/Makefile
index 52636f1..8e02579 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
 include config.mk
 
-install: src/libcolor.h:
-	install src/libcolor.h $(PREFIX)/include
+install: src/libcolor.h
+	install src/libcolor.h $(PREFIX)/include/libcolor.h
diff --git a/config.mk b/config.mk
index 0655786..716b138 100644
--- a/config.mk
+++ b/config.mk
@@ -1 +1 @@
-$(PREFIX) = /usr
+PREFIX = /usr