diff --git a/src/digest_engine.rs b/src/digest_engine.rs
index 7722da1..79ce314 100644
--- a/src/digest_engine.rs
+++ b/src/digest_engine.rs
@@ -15,6 +15,8 @@ use crate::digest_engine::none::DigestEngineNone;
 use crate::digest_engine::program::DigestEngineProgram;
 use crate::digest_engine::sha2::DigestEngineSha256;
 
+use strum::IntoEnumIterator;
+
 #[derive(Debug, Eq, PartialEq, Clone, strum::EnumIter, strum::Display, strum::EnumString, Enum)]
 #[strum(ascii_case_insensitive)]
 pub enum DigestType {
@@ -74,7 +76,7 @@ pub fn get_digest_engine(digest_type: DigestType) -> Box<dyn DigestEngine> {
 pub fn default_digest_type() -> DigestType {
     let mut default = DigestType::None;
     for digest_type in DigestType::iter() {
-        let digest_engine = get_digest_engine(digest_type.clone()).expect("Missing engine");
+        let digest_engine = get_digest_engine(digest_type.clone());
         if digest_engine.is_supported() {
             default = digest_type;
             break;