diff --git a/guitfx.c b/guitfx.c
index 351eb99..d304316 100644
--- a/guitfx.c
+++ b/guitfx.c
@@ -20,11 +20,11 @@ struct port {
 };
 
 struct data {
-	struct pw_main_loop *loop;
-	struct pw_filter *filter;
-	struct port *in_port;
-	struct port *midi_in_port;
-	struct port *out_port;
+	struct pw_main_loop * loop;
+	struct pw_filter * filter;
+	struct port * guit_in_port;
+	struct port * midi_in_port;
+	struct port * out_port;
 
 	//! elapsed time in number of samples
 	uint64_t time;
@@ -89,7 +89,7 @@ static void on_process(void *userdata, struct spa_io_position *position)
 	pw_filter_queue_buffer(data->midi_in_port, b);
 
 
-	in = pw_filter_get_dsp_buffer(data->in_port, n_samples);
+	in = pw_filter_get_dsp_buffer(data->guit_in_port, n_samples);
 	out = pw_filter_get_dsp_buffer(data->out_port, n_samples);
 
 	if( in && out ) {
@@ -139,19 +139,19 @@ int main(int argc, char *argv[])
 			sizeof(struct port),
 			pw_properties_new(
 			    PW_KEY_FORMAT_DSP, "8 bit raw midi",
-				PW_KEY_PORT_NAME, "midi-input",
+				PW_KEY_PORT_NAME, "midi in",
 				NULL
 			),
 			NULL, 0
 		);
 
-	data.in_port = pw_filter_add_port(data.filter,
+	data.guit_in_port = pw_filter_add_port(data.filter,
 			PW_DIRECTION_INPUT,
 			PW_FILTER_PORT_FLAG_MAP_BUFFERS,
 			sizeof(struct port),
 			pw_properties_new(
 				PW_KEY_FORMAT_DSP, "32 bit float mono audio",
-				PW_KEY_PORT_NAME, "guitar input",
+				PW_KEY_PORT_NAME, "guitar in",
 				NULL),
 			NULL, 0);
 
@@ -161,7 +161,7 @@ int main(int argc, char *argv[])
 			sizeof(struct port),
 			pw_properties_new(
 				PW_KEY_FORMAT_DSP, "32 bit float mono audio",
-				PW_KEY_PORT_NAME, "guitar output",
+				PW_KEY_PORT_NAME, "fx out",
 				NULL),
 			NULL, 0);