diff --git a/common/JackNetDriver.cpp b/common/JackNetDriver.cpp
index 36a08294..68a9ae99 100644
--- a/common/JackNetDriver.cpp
+++ b/common/JackNetDriver.cpp
@@ -33,7 +33,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 namespace Jack
 {
 	JackNetDriver::JackNetDriver ( const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table,
-	                               char* ip, size_t port, int midi_input_ports, int midi_output_ports, char* net_name )
+	                               const char* ip, size_t port, int midi_input_ports, int midi_output_ports, const char* net_name )
 			: JackAudioDriver ( name, alias, engine, table )
 	{
 		fMulticastIP = new char[strlen ( ip ) + 1];
diff --git a/common/JackNetDriver.h b/common/JackNetDriver.h
index d6e3fb82..e79473d9 100644
--- a/common/JackNetDriver.h
+++ b/common/JackNetDriver.h
@@ -76,7 +76,7 @@ namespace Jack
 			int Write();
 		public:
 			JackNetDriver ( const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table,
-				char* ip, size_t port, int midi_input_ports, int midi_output_ports, char* master_name );
+				const char* ip, size_t port, int midi_input_ports, int midi_output_ports, const char* master_name );
 			~JackNetDriver();
 
 			int Open ( jack_nframes_t frames_per_cycle, jack_nframes_t rate, bool capturing, bool playing,