diff --git a/src/middlewares/apiKeyAuth.ts b/src/middlewares/apiKeyAuth.ts
index d1b451b..fdaeff3 100644
--- a/src/middlewares/apiKeyAuth.ts
+++ b/src/middlewares/apiKeyAuth.ts
@@ -99,11 +99,26 @@ export const apiKeyAuthMacro = new Elysia().macro({
       const nonce = headers['x-nonce']
       const signature = headers['x-signature']
       const rawTimestamp = headers['x-timestamp']
-      if (!apiKey || !nonce || !signature || !rawTimestamp) {
+
+      const missingHeaders = []
+      if (!apiKey) {
+        missingHeaders.push('X-API-Key')
+      }
+      if (!nonce) {
+        missingHeaders.push('X-Nonce')
+      }
+      if (!rawTimestamp) {
+        missingHeaders.push('X-Timestamp')
+      }
+      if (!signature) {
+        missingHeaders.push('X-Signature')
+      }
+      if (missingHeaders.length) {
+        const missing = missingHeaders.join(', ')
         logger.debug({
           'headers.authorization': headers.authorization,
-        }, 'Failed API key authentication attempt due to missing auth headers')
-        throw new UnauthenticatedError('Missing auth headers')
+        }, 'Failed API key authentication attempt due to missing auth headers: ' + missing)
+        throw new UnauthenticatedError('Missing auth headers: ' + missing)
       }
 
       const timestamp = Number(rawTimestamp)