diff --git a/dynamic/errors.go b/dynamic/errors.go
index 891f254..f8260c3 100644
--- a/dynamic/errors.go
+++ b/dynamic/errors.go
@@ -29,7 +29,7 @@ const ErrMissingRequestArgument = cerr("handler first argument must be of type a
 // ErrMissingParamArgument - missing parameters argument for handler
 const ErrMissingParamArgument = cerr("handler second argument must be a struct")
 
-// ErrUnexportedParamName - argument is unexported in struct
+// ErrUnexportedName - argument is unexported in struct
 const ErrUnexportedName = cerr("unexported name")
 
 // ErrMissingParamOutput - missing output argument for handler
@@ -44,8 +44,5 @@ const ErrMissingOutputFromConfig = cerr("missing a parameter from configuration"
 // ErrWrongParamTypeFromConfig - a configuration parameter type is invalid in the handler param struct
 const ErrWrongParamTypeFromConfig = cerr("invalid struct field type")
 
-// ErrWrongOutputTypeFromConfig - a configuration output type is invalid in the handler output struct
-const ErrWrongOutputTypeFromConfig = cerr("invalid struct field type")
-
 // ErrMissingHandlerErrorOutput - missing handler output error
 const ErrMissingHandlerErrorOutput = cerr("last output must be of type api.Error")
diff --git a/dynamic/spec.go b/dynamic/spec.go
index 83c6dd0..d5fa04b 100644
--- a/dynamic/spec.go
+++ b/dynamic/spec.go
@@ -125,8 +125,7 @@ func (s spec) checkOutput(fnv reflect.Value) error {
 			continue
 		}
 
-		if !ptype.ConvertibleTo(field.Type) {
-			return fmt.Errorf("%s: %w (%s instead of %s)", name, ErrWrongOutputTypeFromConfig, field.Type, ptype)
+			return fmt.Errorf("%s: %w (%s instead of %s)", name, ErrWrongParamTypeFromConfig, field.Type, ptype)
 		}
 	}