diff --git a/libimagentryedit/src/error.rs b/libimagentryedit/src/error.rs
index 07087e56..0cd675e0 100644
--- a/libimagentryedit/src/error.rs
+++ b/libimagentryedit/src/error.rs
@@ -1,6 +1,8 @@
 generate_error_module!(
     generate_error_types!(EditError, EditErrorKind,
-        IOError             => "IO Error"
+        IOError             => "IO Error",
+        ProcessExitFailure  => "Process did not exit properly",
+        InstantiateError    => "Instantation error"
     );
 );