diff --git a/pkgs/by-name/ba/base45/package.nix b/pkgs/by-name/ba/base45/package.nix
index a02b502f1ede..926f49912598 100644
--- a/pkgs/by-name/ba/base45/package.nix
+++ b/pkgs/by-name/ba/base45/package.nix
@@ -16,7 +16,7 @@ buildNimPackage (finalAttrs: {
   meta = finalAttrs.src.meta // {
     description = "Base45 library for Nim";
     license = lib.licenses.unlicense;
-    mainProgram = finalAttrs.pname;
+    mainProgram = "base45";
     maintainers = with lib.maintainers; [ ehmry ];
   };
 })