diff --git a/pkgs/by-name/fs/fsv/package.nix b/pkgs/by-name/fs/fsv/package.nix
index 007d63be275d..5d3867bf044c 100644
--- a/pkgs/by-name/fs/fsv/package.nix
+++ b/pkgs/by-name/fs/fsv/package.nix
@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
     libGLU
   ];
 
+  env.NIX_CFLAGS_COMPILE = "-std=gnu17";
+
   installPhase = ''
     runHook preInstall