diff --git a/ext/mysql/libmysql/acinclude.m4 b/ext/mysql/libmysql/acinclude.m4
index 0fcc7205cd3..7d305676cbe 100644
--- a/ext/mysql/libmysql/acinclude.m4
+++ b/ext/mysql/libmysql/acinclude.m4
@@ -9,7 +9,7 @@ AC_CHECK_FUNCS(alarm bmove \
  getrusage getpwuid getcwd getrlimit getwd index locking longjmp \
  perror pread realpath rename \
  socket strnlen madvise \
- strtoul strtoull snprintf tempnam thr_setconcurrency \
+ strtoll strtoul strtoull snprintf tempnam thr_setconcurrency \
  gethostbyaddr_r gethostbyname_r getpwnam \
  bfill bzero bcmp strstr strpbrk strerror\
  tell atod memcpy memmove \