diff --git a/make.sh b/make.sh
index 4f9afe6..96f3783 100755
--- a/make.sh
+++ b/make.sh
@@ -62,6 +62,7 @@ fi
 LIBS='-lm'
 uname=`uname`
 
+HAVE_VMMETER_H=0
 if [ "$uname" = "Linux" ]; then
   OS_NAME=OS_LINUX
   IOEVENT_USE=IOEVENT_USE_EPOLL
@@ -71,6 +72,11 @@ elif [ "$uname" = "FreeBSD" ] || [ "$uname" = "Darwin" ]; then
   if [ "$uname" = "Darwin" ]; then
     CFLAGS="$CFLAGS -DDARWIN"
   fi
+
+  if [ -f /usr/include/sys/vmmeter.h ]; then
+     HAVE_VMMETER_H=1
+  fi
+
 elif [ "$uname" = "SunOS" ]; then
   OS_NAME=OS_SUNOS
   IOEVENT_USE=IOEVENT_USE_PORT
@@ -105,6 +111,10 @@ cat <<EOF > src/_os_define.h
 #define $IOEVENT_USE  1
 #endif
 
+#ifndef HAVE_VMMETER_H
+#define HAVE_VMMETER_H $HAVE_VMMETER_H
+#endif
+
 #endif
 EOF
 
diff --git a/src/sockopt.c b/src/sockopt.c
index df2c2c0..4335ba3 100644
--- a/src/sockopt.c
+++ b/src/sockopt.c
@@ -44,8 +44,6 @@
 #include <sys/sysctl.h>
 #include <sys/uio.h>
 #include <net/if_dl.h>
-#include <netinet/if_ether.h>
-#include <net/route.h>
 #endif
 #endif
 
diff --git a/src/system_info.c b/src/system_info.c
index b2c0d02..042960e 100644
--- a/src/system_info.c
+++ b/src/system_info.c
@@ -31,7 +31,11 @@
 #ifdef OS_FREEBSD
 #include <sys/sysctl.h>
 #include <sys/ucred.h>
+
+#if HAVE_VMMETER_H == 1
 #include <sys/vmmeter.h>
+#endif
+
 #endif
 #endif
 
@@ -681,7 +685,9 @@ int get_sysinfo(struct fast_sysinfo*info)
         int mib[4];
         size_t size;
 	struct loadavg loads;
+#if HAVE_VMMETER_H == 1
 	struct vmtotal vm;
+#endif
 	struct xsw_usage sw_usage;
 
 	memset(info, 0, sizeof(struct fast_sysinfo));
@@ -723,6 +729,7 @@ int get_sysinfo(struct fast_sysinfo*info)
 
 	get_sys_total_mem_size((int64_t *)&info->totalram);
 
+#if HAVE_VMMETER_H == 1
 	mib[0] = CTL_VM;
 	mib[1] = VM_METER;
 	size = sizeof(vm);
@@ -739,6 +746,7 @@ int get_sysinfo(struct fast_sysinfo*info)
 		info->sharedram = vm.t_rmshr;
 		//info->bufferram = vm.   //TODO:
 	}
+#endif
 
 	mib[0] = CTL_VM;
 	mib[1] = VM_SWAPUSAGE;