diff --git a/pkgs/by-name/gr/groff/fix-underspecified-getenv-prototype.patch b/pkgs/by-name/gr/groff/fix-underspecified-getenv-prototype.patch
deleted file mode 100644
index 663f81f41c93..000000000000
--- a/pkgs/by-name/gr/groff/fix-underspecified-getenv-prototype.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-commit e49b934b77a76443005f92a737dae7370b50e5f7
-Author: G. Branden Robinson <g.branden.robinson@gmail.com>
-Date:   Tue Jan 23 19:39:03 2024 -0600
-
-    [libgroff]: Fix underspecified getenv() prototype.
-
-    * src/libs/libgroff/getopt.c: Do it.  Seen when building groff on a
-      non-glibc-based system (clang 17 complains).
-
----
-Link: https://lists.libreplanet.org/archive/html/groff-commit/2024-01/msg00103.html
-diff --git a/src/libs/libgroff/getopt.c b/src/libs/libgroff/getopt.c
-index 6d4ee5b3a..77f8da1ed 100644
---- a/src/libs/libgroff/getopt.c
-+++ b/src/libs/libgroff/getopt.c
-@@ -124,7 +124,7 @@ static struct _getopt_data getopt_data;
-    whose names are inconsistent.  */
- 
- #ifndef getenv
--extern char *getenv ();
-+extern char *getenv (const char *);
- #endif
- 
- #endif /* not __GNU_LIBRARY__ */