diff --git a/fly/alloy.river b/fly/alloy.river
index 41bd8c9..d2dedb7 100644
--- a/fly/alloy.river
+++ b/fly/alloy.river
@@ -110,10 +110,24 @@ prometheus.scrape "self" {
   scrape_interval = "15s"
 }
 
-// Add instance label to all metrics
+// Strip the "loki_process_custom_" prefix that Alloy adds to stage.metrics,
+// then add instance label. This keeps dashboard queries clean.
 prometheus.relabel "instance" {
   forward_to = [prometheus.remote_write.prometheus.receiver]
 
+  rule {
+    source_labels = ["__name__"]
+    regex         = "loki_process_custom_(.*)"
+    target_label  = "__name__"
+    replacement   = "$1"
+  }
+
+  // Drop internal labels added by the loki pipeline
+  rule {
+    regex  = "component_id|component_path|filename"
+    action = "labeldrop"
+  }
+
   rule {
     target_label = "instance"
     replacement  = "flyio-proxy"