diff --git a/navrecv.cc b/navrecv.cc
index 2d4ad0f..4bcf848 100644
--- a/navrecv.cc
+++ b/navrecv.cc
@@ -176,8 +176,9 @@ void recvSession2(Socket&& uns, ComboAddress client)
     denum = htonl(denum);
     //    cerr<<"Received message "<<denum<< " "<<nmm.localutcseconds()<<" " << nmm.localutcnanoseconds()/1000000000.0<<endl;
     writeToDisk(nmm.localutcseconds(), nmm.sourceid(), out);
-    
-    SSetsockopt(uns, IPPROTO_TCP, TCP_CORK, 1 );            
+#ifdef __linux__
+    SSetsockopt(uns, IPPROTO_TCP, TCP_CORK, 1 );
+#endif
 
     SWrite(uns, num);
   }
diff --git a/zstdwrap.cc b/zstdwrap.cc
index 4eaa8fe..fe890a4 100644
--- a/zstdwrap.cc
+++ b/zstdwrap.cc
@@ -2,6 +2,7 @@
 #include <zstd.h>
 #include <iostream>
 #include <string.h>
+#include <vector>
 #include "navmon.hh"
 
 using std::cout;