diff --git a/configure.ac b/configure.ac
index 618cce6..a5c87d5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -146,7 +146,7 @@ if test "x$JACK_USE_MACH_THREADS" != "x"; then
 fi
 
 # headers
-AC_CHECK_HEADERS(string.h strings.h)
+AC_CHECK_HEADERS(string.h strings.h alloca.h)
 AC_CHECK_HEADERS(getopt.h, [], [
     for d in /Developer/SDKs/MacOSX10.3.0.sdk/usr/include/ ; do
 	AC_CHECK_HEADERS($d/getopt.h, [], [CFLAGS="$CFLAGS -I$d"])
diff --git a/tools/netsource.c b/tools/netsource.c
index 0037515..6e6fadb 100644
--- a/tools/netsource.c
+++ b/tools/netsource.c
@@ -25,6 +25,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
  * @brief This client connects a remote slave JACK to a local JACK server assumed to be the master
  */
+
+#include "config.h" 
+ 
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
@@ -34,7 +37,13 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 #include <netinet/in.h>
 #include <netdb.h>
 
+/* These two required by FreeBSD. */
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#if HAVE_ALLOCA_H
 #include <alloca.h>
+#endif
 
 #include <jack/jack.h>