diff --git a/pkgs/servers/http/nginx/generic.nix b/pkgs/servers/http/nginx/generic.nix
index 12b873df6a4..9dd5ae70283 100644
--- a/pkgs/servers/http/nginx/generic.nix
+++ b/pkgs/servers/http/nginx/generic.nix
@@ -69,7 +69,10 @@ stdenv.mkDerivation {
     ++ optional (with stdenv.hostPlatform; isLinux || isFreeBSD) "--with-file-aio"
     ++ map (mod: "--add-module=${mod.src}") modules;
 
-  NIX_CFLAGS_COMPILE = [ "-I${libxml2.dev}/include/libxml2" ] ++ optional stdenv.isDarwin "-Wno-error=deprecated-declarations";
+  NIX_CFLAGS_COMPILE = [
+    "-I${libxml2.dev}/include/libxml2"
+    "-Wno-error=implicit-fallthrough"
+  ] ++ optional stdenv.isDarwin "-Wno-error=deprecated-declarations";
 
   configurePlatforms = [];