diff --git a/exercises/error_handling/errors6.rs b/exercises/error_handling/errors6.rs
index 0f6b27a6..847a049a 100644
--- a/exercises/error_handling/errors6.rs
+++ b/exercises/error_handling/errors6.rs
@@ -20,9 +20,6 @@ enum ParsePosNonzeroError {
 }
 
 impl ParsePosNonzeroError {
-    fn from_creation(err: CreationError) -> ParsePosNonzeroError {
-        ParsePosNonzeroError::Creation(err)
-    }
     // TODO: add another error conversion function here.
 }