---
 src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git b/src/lib.rs a/src/lib.rs
index f1db3fce..40d3c911 100644
--- b/src/lib.rs
+++ a/src/lib.rs
@@ -105,6 +105,9 @@ use std::error;
 #[cfg(test)]
 mod test;
 
+#[cfg(android_dylib)]
+extern crate std;
+
 /// Cast errors
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum Error {