diff --git a/lib/libc/include/generic-freebsd/poll.h b/lib/libc/include/generic-freebsd/poll.h
index b915f5a37d7efd3ca558e0a3a8d49b31a9a4c601..c3d7f6ff2ab94056d060508ee087b03097af8fd4 100644
--- a/lib/libc/include/generic-freebsd/poll.h
+++ b/lib/libc/include/generic-freebsd/poll.h
@@ -109,9 +109,12 @@ typedef	__sigset_t	sigset_t;
 
 #endif
 
+// zig patch: ssp/poll.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/poll.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 int	poll(struct pollfd _pfd[], nfds_t _nfds, int _timeout);
diff --git a/lib/libc/include/generic-freebsd/signal.h b/lib/libc/include/generic-freebsd/signal.h
index 5f213b97020bcaa93b71624b12d6281458ac44e9..45aaeecf47058904fdd6272eb4f24387383f2bdf 100644
--- a/lib/libc/include/generic-freebsd/signal.h
+++ b/lib/libc/include/generic-freebsd/signal.h
@@ -72,9 +72,12 @@ typedef __pthread_t pthread_t;
 #endif
 #endif /* __POSIX_VISIBLE || __XSI_VISIBLE */
 
+// zig patch: ssp/signal.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/signal.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 int	raise(int);
diff --git a/lib/libc/include/generic-freebsd/stdio.h b/lib/libc/include/generic-freebsd/stdio.h
index e9119c81f59da504efa6b39fd6c43f8a7a4ac8dd..e1e5eab1de17c6209048f2b3d43b918875ea1bd6 100644
--- a/lib/libc/include/generic-freebsd/stdio.h
+++ b/lib/libc/include/generic-freebsd/stdio.h
@@ -252,9 +252,12 @@ __END_DECLS
 #define	L_ctermid	1024	/* size for ctermid(3); PATH_MAX */
 #endif /* __POSIX_VISIBLE */
 
+// zig patch: ssp/stdio.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/stdio.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 #ifdef _XLOCALE_H_
diff --git a/lib/libc/include/generic-freebsd/stdlib.h b/lib/libc/include/generic-freebsd/stdlib.h
index c2522b9d649971c25cdce8f8f9439b03dd27749c..8484d7f7ae5c3d1e603f58bd1798752b718b776b 100644
--- a/lib/libc/include/generic-freebsd/stdlib.h
+++ b/lib/libc/include/generic-freebsd/stdlib.h
@@ -69,9 +69,12 @@ typedef struct {
  */
 #define	RAND_MAX	0x7fffffff
 
+// zig patch: ssp/stdlib.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/stdlib.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 #ifdef _XLOCALE_H_
diff --git a/lib/libc/include/generic-freebsd/string.h b/lib/libc/include/generic-freebsd/string.h
index 48bdd01cf03b4c7435bcc5d5af912f0f58f13beb..a05b91244cfd20af04d48fd80f44228ef902844b 100644
--- a/lib/libc/include/generic-freebsd/string.h
+++ b/lib/libc/include/generic-freebsd/string.h
@@ -49,9 +49,12 @@ typedef	__size_t	size_t;
 #define	_SIZE_T_DECLARED
 #endif
 
+// zig patch: ssp/string.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/string.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 #if __XSI_VISIBLE >= 600 || __ISO_C_VISIBLE >= 2023
diff --git a/lib/libc/include/generic-freebsd/strings.h b/lib/libc/include/generic-freebsd/strings.h
index 38e05ff63704e75f09233f90f63eff3623579b81..72a938133fd01f7c50edc3033a04245a79d59f40 100644
--- a/lib/libc/include/generic-freebsd/strings.h
+++ b/lib/libc/include/generic-freebsd/strings.h
@@ -37,9 +37,12 @@ typedef	__size_t	size_t;
 #define	_SIZE_T_DECLARED
 #endif
 
+// zig patch: ssp/strings.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/strings.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 #if __BSD_VISIBLE || __POSIX_VISIBLE <= 200112
diff --git a/lib/libc/include/generic-freebsd/sys/libkern.h b/lib/libc/include/generic-freebsd/sys/libkern.h
index 7a5a44aa5eeb39aa8d67235e2c04fa457bbab525..69875ede7182d6171ea38b91b8946eb84e018934 100644
--- a/lib/libc/include/generic-freebsd/sys/libkern.h
+++ b/lib/libc/include/generic-freebsd/sys/libkern.h
@@ -334,10 +334,13 @@ signed_extend32(uint32_t bitmap, int lsb, int width)
 #define	FNM_IGNORECASE	FNM_CASEFOLD
 #define	FNM_FILE_NAME	FNM_PATHNAME
 
+// zig patch: ssp/ssp.h header and __ssp_real were added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_KERNEL) && __has_include(<ssp/ssp.h>)
 #include <ssp/ssp.h>	/* __ssp_real */
 #else
 #define __ssp_real(fun)		fun
 #endif
+#endif
 
 #endif /* !_SYS_LIBKERN_H_ */
\ No newline at end of file
diff --git a/lib/libc/include/generic-freebsd/sys/poll.h b/lib/libc/include/generic-freebsd/sys/poll.h
index b915f5a37d7efd3ca558e0a3a8d49b31a9a4c601..c3d7f6ff2ab94056d060508ee087b03097af8fd4 100644
--- a/lib/libc/include/generic-freebsd/sys/poll.h
+++ b/lib/libc/include/generic-freebsd/sys/poll.h
@@ -109,9 +109,12 @@ typedef	__sigset_t	sigset_t;
 
 #endif
 
+// zig patch: ssp/poll.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/poll.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 int	poll(struct pollfd _pfd[], nfds_t _nfds, int _timeout);
diff --git a/lib/libc/include/generic-freebsd/sys/random.h b/lib/libc/include/generic-freebsd/sys/random.h
index 7b9af981dfd1cd368900ab809e855486549eb7c9..5c51c9da097c80dee52adb9216c0b20bc65be8ed 100644
--- a/lib/libc/include/generic-freebsd/sys/random.h
+++ b/lib/libc/include/generic-freebsd/sys/random.h
@@ -156,9 +156,12 @@ random_harvest_direct(const void *entropy, u_int size, enum random_entropy_sourc
 
 #else /* !_KERNEL */
 
+// zig patch: ssp/random.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/random.h>
 #endif
+#endif
 
 #endif /* _KERNEL */
 
diff --git a/lib/libc/include/generic-freebsd/sys/select.h b/lib/libc/include/generic-freebsd/sys/select.h
index dd75cacf0af56588ce6bd2eac5e3f374d27158ca..5ac51b5b7a517702a01f049d02beac23bd9be38f 100644
--- a/lib/libc/include/generic-freebsd/sys/select.h
+++ b/lib/libc/include/generic-freebsd/sys/select.h
@@ -49,11 +49,14 @@ typedef	__fd_mask	fd_mask;
 typedef	__sigset_t	sigset_t;
 #endif
 
+// zig patch: ssp/ssp.h header and __SSP_FORTIFY_LEVEL were added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_KERNEL) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/ssp.h>
 #else
 #define	__SSP_FORTIFY_LEVEL	0
 #endif
+#endif
 
 /*
  * Select uses bit masks of file descriptors in longs.  These macros
diff --git a/lib/libc/include/generic-freebsd/sys/socket.h b/lib/libc/include/generic-freebsd/sys/socket.h
index aea4284303de80c808e57a0235e92a0c9cbf7a89..f0e5099dd4ca098ba3097d1e08dc0c27900de4c8 100644
--- a/lib/libc/include/generic-freebsd/sys/socket.h
+++ b/lib/libc/include/generic-freebsd/sys/socket.h
@@ -691,9 +691,12 @@ struct splice {
 
 #ifndef	_KERNEL
 
+// zig patch: ssp/socket.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/socket.h>
 #endif
+#endif
 
 #include <sys/cdefs.h>
 
diff --git a/lib/libc/include/generic-freebsd/sys/uio.h b/lib/libc/include/generic-freebsd/sys/uio.h
index 067f9df3c517ba3b3124633d5c5f4d000df14b81..7fbe130e001ecaa9e4c034dc43b6e64d9670c514 100644
--- a/lib/libc/include/generic-freebsd/sys/uio.h
+++ b/lib/libc/include/generic-freebsd/sys/uio.h
@@ -101,9 +101,12 @@ int	uiomove_object(struct vm_object *obj, off_t obj_size, struct uio *uio);
 
 #else /* !_KERNEL */
 
+// zig patch: ssp/uio.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/uio.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 ssize_t	readv(int, const struct iovec *, int);
diff --git a/lib/libc/include/generic-freebsd/unistd.h b/lib/libc/include/generic-freebsd/unistd.h
index ce7dda335d59132524416210fb664511b1cf332a..5c52d5832734a6342dc0517c92b887e0bf3876fb 100644
--- a/lib/libc/include/generic-freebsd/unistd.h
+++ b/lib/libc/include/generic-freebsd/unistd.h
@@ -37,9 +37,12 @@
 #include <sys/_null.h>
 #include <sys/_types.h>
 
+// zig patch: ssp/unistd.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/unistd.h>
 #endif
+#endif
 
 #ifndef _GID_T_DECLARED
 typedef	__gid_t		gid_t;
diff --git a/lib/libc/include/generic-freebsd/wchar.h b/lib/libc/include/generic-freebsd/wchar.h
index b4f6504fbd0618b28aafccc85d5027c0679d2e79..4d98e65a715a8f6fb16220da17161032eeb5c766 100644
--- a/lib/libc/include/generic-freebsd/wchar.h
+++ b/lib/libc/include/generic-freebsd/wchar.h
@@ -112,9 +112,12 @@ __BEGIN_DECLS
 size_t	wcslen(const wchar_t *) __pure;
 __END_DECLS
 
+// zig patch: ssp/wchar.h header was added in FreeBSD 15
+#if __FreeBSD_version >= 1500500
 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
 #include <ssp/wchar.h>
 #endif
+#endif
 
 __BEGIN_DECLS
 wint_t	btowc(int);