diff --git a/crates/cdk-phoenixd/src/error.rs b/crates/cdk-phoenixd/src/error.rs
index 5e7367bb8..8eaf60efd 100644
--- a/crates/cdk-phoenixd/src/error.rs
+++ b/crates/cdk-phoenixd/src/error.rs
@@ -11,6 +11,9 @@ pub enum Error {
     /// Unknown invoice
     #[error("Unknown invoice")]
     UnknownInvoice,
+    /// Unsupported unit
+    #[error("Unit Unsupported")]
+    UnsupportedUnit,
     /// Anyhow error
     #[error(transparent)]
     Anyhow(#[from] anyhow::Error),
diff --git a/crates/cdk-phoenixd/src/lib.rs b/crates/cdk-phoenixd/src/lib.rs
index 3b6b5dab5..659b213d6 100644
--- a/crates/cdk-phoenixd/src/lib.rs
+++ b/crates/cdk-phoenixd/src/lib.rs
@@ -123,6 +123,10 @@ impl MintLightning for Phoenixd {
         &self,
         melt_quote_request: &MeltQuoteBolt11Request,
     ) -> Result<PaymentQuoteResponse, Self::Err> {
+        if CurrencyUnit::Sat != melt_quote_request.unit {
+            return Err(Error::UnsupportedUnit.into());
+        }
+
         let invoice_amount_msat = melt_quote_request
             .request
             .amount_milli_satoshis()
@@ -130,7 +134,7 @@ impl MintLightning for Phoenixd {
 
         let amount = to_unit(
             invoice_amount_msat,
-            &CurrencyUnit::Sat,
+            &CurrencyUnit::Msat,
             &melt_quote_request.unit,
         )?;