diff --git a/src/audio/kpb.c b/src/audio/kpb.c
index f3d765790..06a8d0fb7 100644
--- a/src/audio/kpb.c
+++ b/src/audio/kpb.c
@@ -45,6 +45,21 @@
 #include <sof/audio/buffer.h>
 #include <sof/ut.h>
 
+/*! KPB private data */
+struct comp_data {
+	/* runtime data */
+	uint8_t no_of_clients; /**< number of registered clients */
+	struct kpb_client clients[KPB_MAX_NO_OF_CLIENTS];
+	struct history_buffer his_buf_lp;
+	struct history_buffer his_buf_hp;
+	struct notifier kpb_events; /**< KPB events object */
+	struct task draining_task;
+	uint32_t source_period_bytes; /**< source number of period bytes */
+	uint32_t sink_period_bytes; /**< sink number of period bytes */
+	struct comp_buffer *rt_sink; /**< real time sink (channel selector ) */
+};
+
+/*! KPB private functions */
 static void kpb_event_handler(int message, void *cb_data, void *event_data);
 static int kpb_register_client(struct kpb_comp_data *kpb,
 			       struct kpb_client *cli);
@@ -54,6 +69,7 @@ static uint64_t kpb_draining_task(void *arg);
 static void kpb_buffer_data(struct kpb_comp_data *kpb,
 			    struct comp_buffer *source);
 
+
 /**
  * \brief Create a key phrase buffer component.
  * \param[in] comp - generic ipc component pointer.
diff --git a/src/include/sof/audio/kpb.h b/src/include/sof/audio/kpb.h
index 9bacebb92..fb8cab22f 100644
--- a/src/include/sof/audio/kpb.h
+++ b/src/include/sof/audio/kpb.h
@@ -117,20 +117,6 @@ struct history_buffer {
 
 };
 
-/*! Key phrase buffer component */
-struct kpb_comp_data {
-	/* runtime data */
-	uint8_t no_of_clients; /**< number of registered clients */
-	struct kpb_client clients[KPB_MAX_NO_OF_CLIENTS];
-	struct history_buffer his_buf_lp;
-	struct history_buffer his_buf_hp;
-	struct notifier kpb_events; /**< KPB events object */
-	struct task draining_task;
-	uint32_t source_period_bytes; /**< source number of period bytes */
-	uint32_t sink_period_bytes; /**< sink number of period bytes */
-	struct comp_buffer *rt_sink; /**< real time sink (channel selector ) */
-};
-
 #ifdef UNIT_TEST
 void sys_comp_kpb_init(void);
 #endif