diff --git a/pkgs/development/java-modules/maven-fod.nix b/pkgs/development/java-modules/maven-fod.nix
index 753db956dfe0..5353572af13e 100644
--- a/pkgs/development/java-modules/maven-fod.nix
+++ b/pkgs/development/java-modules/maven-fod.nix
@@ -7,8 +7,7 @@
 , patches ? [ ]
 , pname
 , version
-, mvnSha256 ? "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
-, mvnHash ? "sha256-${mvnSha256}"
+, mvnHash ? ""
 , mvnFetchExtraArgs ? { }
 , mvnParameters ? ""
 , ...
@@ -41,6 +40,7 @@ stdenv.mkDerivation (rec {
 
     # don't do any fixup
     dontFixup = true;
+    outputHashAlgo = if mvnHash != "" then null else "sha256";
     outputHashMode = "recursive";
     outputHash = mvnHash;
   } // mvnFetchExtraArgs);