diff --git a/core/src/crypto.rs b/core/src/crypto.rs
index c8344f1..de9c921 100644
--- a/core/src/crypto.rs
+++ b/core/src/crypto.rs
@@ -222,8 +222,7 @@ async fn age_encrypt_with_recipients<W: tokio::io::AsyncWrite + Unpin>(
 
         return Ok(());
     } else {
-        // TODO: Error handling
-        unreachable!("No recipients provided");
+        return Err(ServiceError::AgeNoRecipientsError);
     }
 }
 
diff --git a/core/src/error.rs b/core/src/error.rs
index 5949ec9..4be2274 100644
--- a/core/src/error.rs
+++ b/core/src/error.rs
@@ -40,6 +40,8 @@ pub enum ServiceError {
     CandidateDetailsNotSet,
     #[error("Tokio join error")]
     TokioJoinError(#[from] tokio::task::JoinError),
+    #[error("Age no recipients error")]
+    AgeNoRecipientsError,
     #[error("Age encrypt error")]
     AgeEncryptError(#[from] age::EncryptError),
     #[error("Age decrypt error")]
@@ -88,6 +90,7 @@ impl ServiceError {
             ServiceError::CryptoEncryptFailed => 500,
             ServiceError::CryptoDecryptFailed => 500,
             ServiceError::CandidateDetailsNotSet => 500,
+            ServiceError::AgeNoRecipientsError => 500,
             ServiceError::AgeEncryptError(_) => 500,
             ServiceError::AgeDecryptError(_) => 500,
             ServiceError::AgeKeyError(_) => 500,