diff --git a/Makefile b/Makefile
index ca2dd96..216e1c8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-FLOPPY = 1440
+FLOPPY = 360
 
 .SUFFIXES:
 .SUFFIXES: .bin .asm
diff --git a/README.md b/README.md
index 5988bab..b2545eb 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,6 @@ Floppy sizes
 ------------
 
 You can build either a 1440K or a 360K floppy image from Nor86 sources, the
-default being 1440K. To build a 360K floppy instead, run:
+default being 360K. To build a 1440K floppy instead, run:
 
-    make FLOPPY=360
+    make FLOPPY=1440