diff --git a/pkgs/build-support/fetchdebianpatch/tests.nix b/pkgs/build-support/fetchdebianpatch/tests.nix
index 58f3b395d1fc..9cc4c6dd844d 100644
--- a/pkgs/build-support/fetchdebianpatch/tests.nix
+++ b/pkgs/build-support/fetchdebianpatch/tests.nix
@@ -5,7 +5,7 @@
     pname = "pysimplesoap";
     version = "1.16.2";
     debianRevision = "5";
-    patch = "Add-quotes-to-SOAPAction-header-in-SoapClient";
+    patch = "Add-quotes-to-SOAPAction-header-in-SoapClient.patch";
     hash = "sha256-xA8Wnrpr31H8wy3zHSNfezFNjUJt1HbSXn3qUMzeKc0=";
   };
 
@@ -13,7 +13,7 @@
     pname = "libfile-pid-perl";
     version = "1.01";
     debianRevision = "2";
-    patch = "missing-pidfile";
+    patch = "missing-pidfile.patch";
     hash = "sha256-VBsIYyCnjcZLYQ2Uq2MKPK3kF2wiMKvnq0m727DoavM=";
   };
 }