diff --git a/pkgs/development/compilers/flutter/engine-artifacts/default.nix b/pkgs/development/compilers/flutter/engine-artifacts/default.nix
index 30ef16bbeca9..214a195e0c4b 100644
--- a/pkgs/development/compilers/flutter/engine-artifacts/default.nix
+++ b/pkgs/development/compilers/flutter/engine-artifacts/default.nix
@@ -9,7 +9,8 @@
 }:
 
 let
-  hashes = (import ./hashes.nix).${engineVersion};
+  hashes = (import ./hashes.nix).${engineVersion} or
+    (throw "There are no known artifact hashes for Flutter engine version ${engineVersion}.");
 
   artifacts =
     {