s/PREFIX/CONFIG_PREFIX/
diff --git a/examples/bootfloppy/mkrootfs.sh b/examples/bootfloppy/mkrootfs.sh
index e79ed41..5cdff21 100755
--- a/examples/bootfloppy/mkrootfs.sh
+++ b/examples/bootfloppy/mkrootfs.sh
@@ -76,7 +76,7 @@
 cd $BUSYBOX_DIR
 make distclean
 make CC=$BASE_DIR/$UCLIBC_DIR/extra/gcc-uClibc/i386-uclibc-gcc
-make PREFIX=$BASE_DIR/$TARGET_DIR install
+make CONFIG_PREFIX=$BASE_DIR/$TARGET_DIR install
 cd $BASE_DIR