diff --git a/pkgs/development/coq-modules/StructTact/default.nix b/pkgs/development/coq-modules/StructTact/default.nix
index 6618e75bab8..3fb8a42cfb5 100644
--- a/pkgs/development/coq-modules/StructTact/default.nix
+++ b/pkgs/development/coq-modules/StructTact/default.nix
@@ -12,5 +12,9 @@ with lib; mkCoqDerivation {
   release."20210328".sha256 = "sha256:1y5r1zm3hli10ah6lnj7n8hxad6rb6rgldd0g7m2fjibzvwqzhdg";
   release."20181102".rev =    "82a85b7ec07e71fa6b30cfc05f6a7bfb09ef2510";
   release."20181102".sha256 = "08zry20flgj7qq37xk32kzmg4fg6d4wi9m7pf9aph8fd3j2a0b5v";
-  preConfigure = "patchShebangs ./configure";
+  preConfigure = ''
+    if [ -f ./configure ]; then
+      patchShebangs ./configure
+    fi
+  '';
 }