diff --git a/apps/dsp.c b/apps/dsp.c
index 7292328212..9f53676e1c 100644
--- a/apps/dsp.c
+++ b/apps/dsp.c
@@ -218,8 +218,8 @@ static int treble;                                  /* A/V */
 /* Settings applicable to audio codec only */
 static int32_t  pitch_ratio = PITCH_SPEED_100;
 static int  channels_mode;
-       long dsp_sw_gain;
-       long dsp_sw_cross;
+static long dsp_sw_gain;
+static long dsp_sw_cross;
 static bool dither_enabled;
 static long eq_precut;
 static long track_gain;
diff --git a/apps/talk.c b/apps/talk.c
index c7a7eab50a..b816d8e11c 100644
--- a/apps/talk.c
+++ b/apps/talk.c
@@ -120,8 +120,8 @@ static bool force_enqueue_next; /* enqueue next utterance even if enqueue is fal
 static int queue_write; /* write index of queue, by application */
 static int queue_read; /* read index of queue, by ISR context */
 #if CONFIG_CODEC == SWCODEC
-struct mutex queue_mutex SHAREDBSS_ATTR; /* protects queue_read, queue_write
-                                            and thumbnail_buf_used */
+/* protects queue_read, queue_write and thumbnail_buf_used */
+static struct mutex queue_mutex SHAREDBSS_ATTR; 
 #define talk_queue_lock() ({ mutex_lock(&queue_mutex); })
 #define talk_queue_unlock() ({ mutex_unlock(&queue_mutex); })
 #else