diff --git b/src/lib.rs a/src/lib.rs
index 53bee07..923d672 100644
--- b/src/lib.rs
+++ a/src/lib.rs
@@ -45,9 +45,10 @@
 //! is that after it is initialized, it can't be modified.


+// ANDROID: Unconditionally use std to allow building as a dylib.
 #[cfg(not(test))]
 #[macro_use]
-extern crate core as std;
+extern crate std;
 #[cfg(feature = "serde")]
 extern crate serde;