diff --git a/pkgs/build-support/flutter/default.nix b/pkgs/build-support/flutter/default.nix
index abb1c8ac359f..79d23d7535a2 100644
--- a/pkgs/build-support/flutter/default.nix
+++ b/pkgs/build-support/flutter/default.nix
@@ -16,7 +16,7 @@
 , customPackageOverrides ? { }
 , autoDepsList ? false
 , depsListFile ? null
-, vendorHash
+, vendorHash ? ""
 , pubspecLockFile ? null
 , nativeBuildInputs ? [ ]
 , preUnpack ? ""