diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index b3f866895b6..b78e423d869 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1927,7 +1927,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   typeEquality = callPackage ../development/libraries/haskell/type-equality {};
 
-  typeLlevelNaturalNumber = callPackage ../development/libraries/haskell/type-level-natural-number {};
+  typeLevelNaturalNumber = callPackage ../development/libraries/haskell/type-level-natural-number {};
 
   unbound = callPackage ../development/libraries/haskell/unbound {};
 
diff --git a/pkgs/top-level/release-haskell.nix b/pkgs/top-level/release-haskell.nix
index 1bf2127a86d..790e1c5ff2c 100644
--- a/pkgs/top-level/release-haskell.nix
+++ b/pkgs/top-level/release-haskell.nix
@@ -386,7 +386,7 @@ mapHaskellTestOn {
   transformersBase = default;
   transformersCompat = default;
   tuple = default;
-  typeLlevelNaturalNumber = default;
+  typeLevelNaturalNumber = default;
   uniplate = default;
   uniqueid = default;
   unixCompat = default;