diff --git a/Cargo.toml b/Cargo.toml
index a05825a..ec9fc13 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,7 +58,7 @@ mangled-names = []
 no-lang-items = []
 
 # Only used in the compiler's build system
-rustc-dep-of-std = ['c', 'compiler-builtins', 'core']
+rustc-dep-of-std = ['compiler-builtins', 'core']
 
 [[example]]
 name = "intrinsics"