diff --git a/src/fcntl.rs b/src/fcntl.rs
index 1581d3a702..d2242dacd6 100644
--- a/src/fcntl.rs
+++ b/src/fcntl.rs
@@ -20,7 +20,7 @@ use crate::sys::uio::IoVec; // For vmsplice
     target_os = "fuchsia",
     any(target_os = "wasi", target_env = "wasi"),
     target_env = "uclibc",
-    target_env = "freebsd"
+    target_os = "freebsd"
 ))]
 pub use self::posix_fadvise::*;
 
@@ -587,7 +587,7 @@ pub fn fallocate(
     target_os = "fuchsia",
     any(target_os = "wasi", target_env = "wasi"),
     target_env = "uclibc",
-    target_env = "freebsd"
+    target_os = "freebsd"
 ))]
 mod posix_fadvise {
     use crate::errno::Errno;
diff --git a/test/test_fcntl.rs b/test/test_fcntl.rs
index 1e8b267843..5d1bafebe1 100644
--- a/test/test_fcntl.rs
+++ b/test/test_fcntl.rs
@@ -332,7 +332,7 @@ mod linux_android {
           target_os = "fuchsia",
           any(target_os = "wasi", target_env = "wasi"),
           target_env = "uclibc",
-          target_env = "freebsd"))]
+          target_os = "freebsd"))]
 mod test_posix_fadvise {
 
     use tempfile::NamedTempFile;