diff --git a/pkgs/top-level/static.nix b/pkgs/top-level/static.nix
index dcbaf7e0548f..3cddcde603d8 100644
--- a/pkgs/top-level/static.nix
+++ b/pkgs/top-level/static.nix
@@ -100,6 +100,7 @@ in {
   };
 
   curl = super.curl.override {
+    # brotli doesn't build static (Mar. 2021)
     brotliSupport = false;
     # disable gss becuase of: undefined reference to `k5_bcmp'
     gssSupport = false;