diff --git a/lib/libc/aarch64/string/Makefile.inc b/lib/libc/aarch64/string/Makefile.inc
index 996a2fd45bc0..0b2974947389 100644
--- a/lib/libc/aarch64/string/Makefile.inc
+++ b/lib/libc/aarch64/string/Makefile.inc
@@ -1,47 +1,48 @@
 #
 # String handling from the Arm Optimized Routines
 # https://github.com/ARM-software/optimized-routines
 #
 
 AARCH64_STRING_FUNCS= \
 	memchr \
 	memcmp \
 	memcpy \
 	memmove \
 	memrchr \
 	memset \
 	stpcpy \
 	strchr \
 	strchrnul \
 	strcpy \
 	strlen \
 	strncmp \
 	strnlen \
 	strrchr
 
 # SIMD-enhanced routines not derived from Arm's code
 MDSRCS+= \
 	strcmp.S \
 	strspn.S \
 	strcspn.S \
 	strpbrk.c \
-	strsep.c
+	strsep.c \
+	strcat.c
 
 #
 # Add the above functions. Generate an asm file that includes the needed
 # Arm Optimized Routines file defining the function name to the libc name.
 # Some file need multiple macros defined or a weak symbol added we can
 # override the generated file in these cases.
 #
 .for FUNC in ${AARCH64_STRING_FUNCS}
 .if !exists(${FUNC}.S)
 ${FUNC}.S:
 	printf '/* %sgenerated by libc/aarch64/string/Makefile.inc */\n' @ > ${.TARGET}
 	printf '#define	__%s_aarch64 %s\n' ${FUNC} ${FUNC} >> ${.TARGET}
 	printf '#include "aarch64/%s.S"\n' ${FUNC} >> ${.TARGET}
 CLEANFILES+=	${FUNC}.S
 .endif
 
 MDSRCS+=	${FUNC}.S
 CFLAGS.${FUNC}.S+=-I${SRCTOP}/contrib/arm-optimized-routines/string
 .endfor
diff --git a/lib/libc/aarch64/string/strcat.c b/lib/libc/aarch64/string/strcat.c
new file mode 100644
index 000000000000..c70875be1c1a
--- /dev/null
+++ b/lib/libc/aarch64/string/strcat.c
@@ -0,0 +1,20 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024 Getz Mikalsen <getz@FreeBSD.org>
+*/
+
+#include <string.h>
+
+#undef strcat	/* _FORTIFY_SOURCE */
+
+char *
+strcat(char * __restrict s, const char * __restrict append)
+{
+	char *save = s;
+
+	/* call into SIMD optimized functions */
+	stpcpy(s + strlen(s), append);
+
+	return(save);
+}