diff --git a/libc-test/semver/freebsd.txt b/libc-test/semver/freebsd.txt
index 429ae63eb8d31..310841d9bbcdc 100644
--- a/libc-test/semver/freebsd.txt
+++ b/libc-test/semver/freebsd.txt
@@ -702,6 +702,8 @@ MALLOCX_ARENA
 MALLOCX_ALIGN
 MALLOCX_TCACHE
 MALLOCX_ZERO
+MAP_ALIGNED
+MAP_ALIGNED_SUPER
 MAP_COPY
 MAP_EXCL
 MAP_FILE
diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index b70a40f15d2c6..6ae82b8d87f79 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -4698,6 +4698,9 @@ f! {
             as ::c_uint
     }
 
+    pub {const} fn MAP_ALIGNED(a: ::c_int) -> ::c_int {
+        a << 24
+    }
     pub fn MALLOCX_ALIGN(lg: ::c_uint) -> ::c_int {
         ffsl(lg as ::c_long - 1)
     }