diff --git a/r2r/src/lib.rs b/r2r/src/lib.rs
index a7e5fccc0..904485a7b 100644
--- a/r2r/src/lib.rs
+++ b/r2r/src/lib.rs
@@ -115,7 +115,7 @@ mod context;
 pub use context::Context;
 
 mod parameters;
-pub use parameters::{Parameter, ParameterValue, RosParams};
+pub use parameters::{Parameter, ParameterValue, RosParams, WrongParameterType};
 
 pub use r2r_macros::RosParams;