diff --git a/README b/README
index 5380d24..87a3833 100644
--- a/README
+++ b/README
@@ -9,12 +9,6 @@ to Peer Communications; ISBN: 1-57398-013-7; 1st edition (June 14,
 2000)). See also https://pdos.csail.mit.edu/6.828/, which
 provides pointers to on-line resources for v6.
 
-xv6 borrows code from the following sources:
-    JOS (asm.h, elf.h, mmu.h, bootasm.S, ide.c, console.c, and others)
-    Plan 9 (entryother.S, mp.h, mp.c, lapic.c)
-    FreeBSD (ioapic.c)
-    NetBSD (console.c)
-
 The following people have made contributions: Russ Cox (context switching,
 locking), Cliff Frey (MP), Xiao Yu (MP), Nickolai Zeldovich, and Austin
 Clements.