diff --git a/pkgs/applications/science/physics/xflr5/default.nix b/pkgs/applications/science/physics/xflr5/default.nix
index 3d9615cf5329..eb60c12e9f0c 100644
--- a/pkgs/applications/science/physics/xflr5/default.nix
+++ b/pkgs/applications/science/physics/xflr5/default.nix
@@ -1,11 +1,14 @@
-{ mkDerivation, lib, fetchzip, qmake }:
+{ mkDerivation, lib, qmake, fetchsvn }:
 
 mkDerivation rec {
   pname = "xflr5";
   version = "6.61";
-  src = fetchzip {
-    url = "https://sourceforge.net/code-snapshots/svn/x/xf/xflr5/code/xflr5-code-r1481-tags-v6.61-xflr5.zip";
-    sha256 = "sha256-voWnXiBo7+kBPiZLVpSiXyBsYJv/Phd3noA81SQ5Vtw=";
+
+  sourceRoot = "${src.name}/xflr5";
+  src = fetchsvn {
+    url = "https://svn.code.sf.net/p/xflr5/code/trunk";
+    rev = "1480";
+    sha256 = "sha256-Uj6R15OT5i5tAJEYWqyFyN5Z51Wz5RjO26mWC3Y6QAI=";
   };
 
   nativeBuildInputs = [ qmake ];