diff --git a/std/math/big/int.jule b/std/math/big/int.jule
index f2af71d58..3dc4a21ad 100644
--- a/std/math/big/int.jule
+++ b/std/math/big/int.jule
@@ -186,18 +186,4 @@ impl Int {
         }
         ret x
     }
-
-    pub fn to_str(self): str {
-        let mut s = ""
-        let mut i = self.nat.bits.len - 1
-        for i >= 0; i-- {
-            let b = self.nat.bits[i]
-            if b == 0b0 {
-                s += "0"
-            } else {
-                s += "1"
-            }
-        }
-        ret s
-    }
 }