diff --git a/pkgs/tools/networking/ncftp/default.nix b/pkgs/tools/networking/ncftp/default.nix
index a43d5f4a88c..8156caad7c3 100644
--- a/pkgs/tools/networking/ncftp/default.nix
+++ b/pkgs/tools/networking/ncftp/default.nix
@@ -13,6 +13,12 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: bookmark.o: (.bss+0x20): multiple definition of `gBm';
+  #     gpshare.o:(.bss+0x0): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
   preConfigure = ''
     find -name Makefile.in | xargs sed -i '/^TMPDIR=/d'