diff --git a/lib/runtime-c-api/src/lib.rs b/lib/runtime-c-api/src/lib.rs
index 51f23517c..b087cd356 100644
--- a/lib/runtime-c-api/src/lib.rs
+++ b/lib/runtime-c-api/src/lib.rs
@@ -97,6 +97,7 @@ pub mod table;
 pub mod trampoline;
 pub mod value;
 
+#[derive(Debug)]
 #[allow(non_camel_case_types)]
 #[repr(C)]
 pub enum wasmer_result_t {