diff --git a/pkgs/os-specific/darwin/apple-source-releases/libpcap/package.nix b/pkgs/os-specific/darwin/apple-source-releases/libpcap/package.nix
index 223dc3858a94..243f66f56d6b 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libpcap/package.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libpcap/package.nix
@@ -4,7 +4,6 @@
   apple-sdk_15,
   bison,
   bluez,
-  fetchFromGitHub,
   flex,
   mkAppleDerivation,
   stdenv,
@@ -92,6 +91,8 @@ mkAppleDerivation {
   postPatch = ''
     substituteInPlace libpcap/Makefile.in \
       --replace-fail '@PLATFORM_C_SRC@' '@PLATFORM_C_SRC@ pcap-darwin.c pcap-util.c pcapng.c'
+    substituteInPlace libpcap/pcap/pcap.h \
+      --replace-fail '#if PRIVATE' '#if 1'
   '';
 
   configureFlags = [