diff --git a/src/libstd/sys/unix/cmath.rs b/src/libstd/sys/unix/cmath.rs
index 2916ebe44405..f327b69fc754 100644
--- a/src/libstd/sys/unix/cmath.rs
+++ b/src/libstd/sys/unix/cmath.rs
@@ -2,7 +2,6 @@
 
 use libc::{c_double, c_float};
 
-#[link_name = "m"]
 extern "C" {
     pub fn acos(n: c_double) -> c_double;
     pub fn acosf(n: c_float) -> c_float;
diff --git a/src/libstd/sys/vxworks/cmath.rs b/src/libstd/sys/vxworks/cmath.rs
index 2916ebe44405..f327b69fc754 100644
--- a/src/libstd/sys/vxworks/cmath.rs
+++ b/src/libstd/sys/vxworks/cmath.rs
@@ -2,7 +2,6 @@
 
 use libc::{c_double, c_float};
 
-#[link_name = "m"]
 extern "C" {
     pub fn acos(n: c_double) -> c_double;
     pub fn acosf(n: c_float) -> c_float;
diff --git a/src/libstd/sys/windows/cmath.rs b/src/libstd/sys/windows/cmath.rs
index 7c5bfa1bd064..6f5d40b494fb 100644
--- a/src/libstd/sys/windows/cmath.rs
+++ b/src/libstd/sys/windows/cmath.rs
@@ -2,7 +2,6 @@
 
 use libc::{c_double, c_float};
 
-#[link_name = "m"]
 extern "C" {
     pub fn acos(n: c_double) -> c_double;
     pub fn asin(n: c_double) -> c_double;