diff --git a/src/libstd/Cargo.toml b/src/libstd/Cargo.toml
index 0384c6666e3b..fcf84cb71691 100644
--- a/src/libstd/Cargo.toml
+++ b/src/libstd/Cargo.toml
@@ -23,9 +23,6 @@ compiler_builtins = { path = "../libcompiler_builtins" }
 std_unicode = { path = "../libstd_unicode" }
 unwind = { path = "../libunwind" }
 
-[replace]
-"core:0.0.0" = { path = "../libcore" }
-
 [build-dependencies]
 build_helper = { path = "../build_helper" }
 gcc = "0.3.27"