diff --git a/gcc/Makefile b/gcc/Makefile
index 46d23ec..bc7d4c2 100644
--- a/gcc/Makefile
+++ b/gcc/Makefile
@@ -4,7 +4,7 @@ prepare:
 gcc:
 	mkdir build
 	cd build
-    ./configure --prefix=/usr --enable-languages=c,c++,d,fortran,go,objc,obj-c++
+	./configure --prefix=${PREFIX}/usr --enable-languages=c,c++,d,fortran,go,objc,obj-c++
 install:
 	make install DESTDIR="${PREFIX}"
 uninstall: