diff --git a/steamcache/steamcache.go b/steamcache/steamcache.go
index b74240b..a673de4 100644
--- a/steamcache/steamcache.go
+++ b/steamcache/steamcache.go
@@ -502,13 +502,13 @@ func (sc *SteamCache) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		// Method 2: Content-Type Validation (Steam files should be binary)
+		// Method 2: Content-Type Validation (Steam files should be application/x-steam-chunk)
 		contentType := resp.Header.Get("Content-Type")
-		if contentType != "" && !strings.Contains(contentType, "application/octet-stream") {
+		if contentType != "" && !strings.Contains(contentType, "application/x-steam-chunk") {
 			logger.Logger.Warn().
 				Str("url", req.URL.String()).
 				Str("content_type", contentType).
-				Msg("Unexpected content type from Steam")
+				Msg("Unexpected content type from Steam - expected application/x-steam-chunk")
 		}
 
 		// Method 3: Content-Length Validation