diff --git a/pkgs/applications/science/math/csdp/default.nix b/pkgs/applications/science/math/csdp/default.nix
index 64fa4579949..67a0834c00d 100644
--- a/pkgs/applications/science/math/csdp/default.nix
+++ b/pkgs/applications/science/math/csdp/default.nix
@@ -15,6 +15,7 @@ stdenv.mkDerivation {
   '';
 
   preInstall = ''
+    rm -f INSTALL
     mkdir -p $out/bin
   '';