diff --git a/pkgs/development/python-modules/grpcio/default.nix b/pkgs/development/python-modules/grpcio/default.nix
index ecb15cc024db..9311838627a1 100644
--- a/pkgs/development/python-modules/grpcio/default.nix
+++ b/pkgs/development/python-modules/grpcio/default.nix
@@ -15,6 +15,7 @@ buildPythonPackage rec {
 
   preBuild = stdenv.lib.optionalString stdenv.isDarwin "unset AR";
 
+  GRPC_BUILD_WITH_BORING_SSL_ASM = "";
   GRPC_PYTHON_BUILD_SYSTEM_OPENSSL = 1;
   GRPC_PYTHON_BUILD_SYSTEM_ZLIB = 1;
   GRPC_PYTHON_BUILD_SYSTEM_CARES = 1;