diff --git a/src/c/math.rs b/src/c/math.rs
index cbfc4c2..c5bbcd0 100644
--- a/src/c/math.rs
+++ b/src/c/math.rs
@@ -2,7 +2,7 @@ use binding::{CDouble, CInt};
 
 
 
-#[link(name="c")]
+#[link(name="m")]
 extern
 {
    pub fn acos(x: CDouble) -> CDouble;