diff --git a/Makefile b/Makefile
index 6274537..a2554d2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,10 @@
+PREFIX?=/usr/local
+
 CFLAGS  += -pedantic -Wall -Wextra -Wmissing-prototypes \
            -Werror -Wshadow -Wstrict-overflow -fno-strict-aliasing \
            -Wstrict-prototypes -Wwrite-strings \
 		   -Os
 
-PREFIX = /usr/local
-
 
 all: iblock