diff --git a/pkgs/by-name/im/imapsync/package.nix b/pkgs/by-name/im/imapsync/package.nix
index 6c0a5c452f3d..43ccee9bac56 100644
--- a/pkgs/by-name/im/imapsync/package.nix
+++ b/pkgs/by-name/im/imapsync/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     sed -i -e s@/usr@$out@ Makefile
-    substituteInPlace INSTALL.d/prerequisites_imapsync --replace "PAR::Packer" ""
+    substituteInPlace INSTALL.d/prerequisites_imapsync --replace-fail "PAR::Packer" ""
   '';
 
   postInstall = ''
@@ -68,13 +68,13 @@ stdenv.mkDerivation (finalAttrs: {
 
   meta = {
     description = "Mail folder synchronizer between IMAP servers";
-    mainProgram = "imapsync";
-    homepage = "https://imapsync.lamiral.info/";
+    homepage = "https://imapsync.lamiral.info";
     license = lib.licenses.nlpl;
     maintainers = with lib.maintainers; [
       pSub
       motiejus
     ];
     platforms = lib.platforms.unix;
+    mainProgram = "imapsync";
   };
 })