diff --git a/math/nauty/files/patch-makefile.in b/math/nauty/files/patch-makefile.in
deleted file mode 100644
index 76dc49de9aac..000000000000
--- a/math/nauty/files/patch-makefile.in
+++ /dev/null
@@ -1,13 +0,0 @@
-- allow to add additional CFLAGS to build shared libraries
-
---- makefile.in.orig	2021-09-03 17:45:35 UTC
-+++ makefile.in
-@@ -3,7 +3,7 @@
- 
- SHELL=@SHELL@
- CC=@CC@
--CFLAGS=@CFLAGS@ @MORECFLAGS@
-+CFLAGS=@CFLAGS@ @MORECFLAGS@ ${FREEBSD_EXTRA_CFLAGS}
- SAFECFLAGS=@CFLAGS@
- LDFLAGS=@LDFLAGS@ @LIBS@
- THREADLIB=@threadlib@