diff --git a/gst/dtmf/gstdtmfsrc.c b/gst/dtmf/gstdtmfsrc.c
index 8595adf8ae..4115395dca 100644
--- a/gst/dtmf/gstdtmfsrc.c
+++ b/gst/dtmf/gstdtmfsrc.c
@@ -482,7 +482,7 @@ gst_dtmf_src_add_start_event (GstDTMFSrc * dtmfsrc, gint event_number,
     gint event_volume)
 {
 
-  GstDTMFSrcEvent *event = g_malloc (sizeof (GstDTMFSrcEvent));
+  GstDTMFSrcEvent *event = g_slice_new0 (GstDTMFSrcEvent);
   event->event_type = DTMF_EVENT_TYPE_START;
   event->sample = 0;
   event->event_number = CLAMP (event_number, MIN_EVENT, MAX_EVENT);
@@ -495,7 +495,7 @@ static void
 gst_dtmf_src_add_stop_event (GstDTMFSrc * dtmfsrc)
 {
 
-  GstDTMFSrcEvent *event = g_malloc (sizeof (GstDTMFSrcEvent));
+  GstDTMFSrcEvent *event = g_slice_new0 (GstDTMFSrcEvent);
   event->event_type = DTMF_EVENT_TYPE_STOP;
   event->sample = 0;
   event->event_number = 0;
@@ -658,7 +658,7 @@ gst_dtmf_src_create (GstBaseSrc * basesrc, guint64 offset,
           break;
       }
       if (event)
-        g_free (event);
+        g_slice_free (GstDTMFSrcEvent, event);
     } else if (dtmfsrc->last_event->packet_count * dtmfsrc->interval >=
         MIN_DUTY_CYCLE) {
       event = g_async_queue_try_pop (dtmfsrc->event_queue);
@@ -673,7 +673,7 @@ gst_dtmf_src_create (GstBaseSrc * basesrc, guint64 offset,
           case DTMF_EVENT_TYPE_STOP:
             gst_dtmf_src_set_stream_lock (dtmfsrc, FALSE);
 
-            g_free (dtmfsrc->last_event);
+            g_slice_free (GstDTMFSrcEvent, dtmfsrc->last_event);
             dtmfsrc->last_event = NULL;
             break;
           case DTMF_EVENT_TYPE_PAUSE_TASK:
@@ -692,7 +692,7 @@ gst_dtmf_src_create (GstBaseSrc * basesrc, guint64 offset,
 
             break;
         }
-        g_free (event);
+        g_slice_free (GstDTMFSrcEvent, event);
       }
     }
   } while (dtmfsrc->last_event == NULL);
@@ -748,7 +748,7 @@ paused:
     GST_DEBUG_OBJECT (dtmfsrc, "Stopping current event");
     /* Don't forget to release the stream lock */
     gst_dtmf_src_set_stream_lock (dtmfsrc, FALSE);
-    g_free (dtmfsrc->last_event);
+    g_slice_free (GstDTMFSrcEvent, dtmfsrc->last_event);
     dtmfsrc->last_event = NULL;
   }
 
@@ -772,7 +772,7 @@ gst_dtmf_src_unlock (GstBaseSrc * src)
   GST_OBJECT_UNLOCK (dtmfsrc);
 
   GST_DEBUG_OBJECT (dtmfsrc, "Pushing the PAUSE_TASK event on unlock request");
-  event = g_malloc (sizeof (GstDTMFSrcEvent));
+  event = g_slice_new0 (GstDTMFSrcEvent);
   event->event_type = DTMF_EVENT_TYPE_PAUSE_TASK;
   g_async_queue_push (dtmfsrc->event_queue, event);
 
@@ -875,7 +875,7 @@ gst_dtmf_src_change_state (GstElement * element, GstStateChange transition)
       event = g_async_queue_try_pop (dtmfsrc->event_queue);
 
       while (event != NULL) {
-        g_free (event);
+        g_slice_free (GstDTMFSrcEvent, event);
         event = g_async_queue_try_pop (dtmfsrc->event_queue);
       }
       no_preroll = TRUE;
@@ -899,7 +899,7 @@ gst_dtmf_src_change_state (GstElement * element, GstStateChange transition)
       event = g_async_queue_try_pop (dtmfsrc->event_queue);
 
       while (event != NULL) {
-        g_free (event);
+        g_slice_free (GstDTMFSrcEvent, event);
         event = g_async_queue_try_pop (dtmfsrc->event_queue);
       }
 
diff --git a/gst/dtmf/gstrtpdtmfsrc.c b/gst/dtmf/gstrtpdtmfsrc.c
index b41c0c459c..65d0ce8c14 100644
--- a/gst/dtmf/gstrtpdtmfsrc.c
+++ b/gst/dtmf/gstrtpdtmfsrc.c
@@ -305,9 +305,9 @@ static void
 gst_rtp_dtmf_src_event_free (GstRTPDTMFSrcEvent * event)
 {
   if (event) {
-    g_free (event->payload);
-    event->payload = NULL;
-    g_free (event);
+    if (event->payload)
+      g_slice_free (GstRTPDTMFPayload, event->payload);
+    g_slice_free (GstRTPDTMFSrcEvent, event);
   }
 }
 
@@ -568,10 +568,10 @@ gst_rtp_dtmf_src_add_start_event (GstRTPDTMFSrc * dtmfsrc, gint event_number,
     gint event_volume)
 {
 
-  GstRTPDTMFSrcEvent *event = g_malloc (sizeof (GstRTPDTMFSrcEvent));
+  GstRTPDTMFSrcEvent *event = g_slice_new0 (GstRTPDTMFSrcEvent);
   event->event_type = RTP_DTMF_EVENT_TYPE_START;
 
-  event->payload = g_new0 (GstRTPDTMFPayload, 1);
+  event->payload = g_slice_new0 (GstRTPDTMFPayload);
   event->payload->event = CLAMP (event_number, MIN_EVENT, MAX_EVENT);
   event->payload->volume = CLAMP (event_volume, MIN_VOLUME, MAX_VOLUME);
   event->payload->duration = dtmfsrc->interval * dtmfsrc->clock_rate / 1000;
@@ -583,7 +583,7 @@ static void
 gst_rtp_dtmf_src_add_stop_event (GstRTPDTMFSrc * dtmfsrc)
 {
 
-  GstRTPDTMFSrcEvent *event = g_new0 (GstRTPDTMFSrcEvent, 1);
+  GstRTPDTMFSrcEvent *event = g_slice_new0 (GstRTPDTMFSrcEvent);
   event->event_type = RTP_DTMF_EVENT_TYPE_STOP;
 
   g_async_queue_push (dtmfsrc->event_queue, event);
@@ -816,7 +816,7 @@ send_last:
     /* Don't forget to release the stream lock */
     gst_rtp_dtmf_src_set_stream_lock (dtmfsrc, FALSE);
 
-    g_free (dtmfsrc->payload);
+    g_slice_free (GstRTPDTMFPayload, dtmfsrc->payload);
     dtmfsrc->payload = NULL;
 
     dtmfsrc->last_packet = FALSE;
@@ -1069,7 +1069,7 @@ gst_rtp_dtmf_src_unlock (GstBaseSrc * src)
   GST_OBJECT_UNLOCK (dtmfsrc);
 
   GST_DEBUG_OBJECT (dtmfsrc, "Pushing the PAUSE_TASK event on unlock request");
-  event = g_new0 (GstRTPDTMFSrcEvent, 1);
+  event = g_slice_new0 (GstRTPDTMFSrcEvent);
   event->event_type = RTP_DTMF_EVENT_TYPE_PAUSE_TASK;
   g_async_queue_push (dtmfsrc->event_queue, event);