diff --git a/src/rcore/addresses.rs b/src/rcore/addresses.rs
index 11507ea..f2a56d0 100644
--- a/src/rcore/addresses.rs
+++ b/src/rcore/addresses.rs
@@ -74,7 +74,7 @@ fn _parse_slice<'a, Ctx: Context<'a>, F: ParseFactory<'a, Ctx>>(
     }
 }
 
-impl<'a, Ctx: Context<'a>, F: Factory<'a, Ctx>> FactoryExt<'a, Ctx> for F {
+impl<'a, Ctx: Context<'a>, F: ParseFactory<'a, Ctx>> FactoryExt<'a, Ctx> for F {
     fn parse_slice(
         &self,
         slice: &[u8],