diff --git a/sys/msdk/gstmsdksystemmemory.c b/sys/msdk/gstmsdksystemmemory.c
index 6b7900f4a5..80f689f1b5 100644
--- a/sys/msdk/gstmsdksystemmemory.c
+++ b/sys/msdk/gstmsdksystemmemory.c
@@ -199,13 +199,21 @@ gst_msdk_system_memory_new (GstAllocator * base_allocator)
 
   mem->surface = gst_msdk_system_allocator_create_surface (base_allocator);
 
+  if (!mem->surface) {
+    g_slice_free (GstMsdkSystemMemory, mem);
+    return NULL;
+  }
+
   vip = &allocator->image_info;
   gst_memory_init (&mem->parent_instance, 0,
       base_allocator, NULL, GST_VIDEO_INFO_SIZE (vip), 0, 0,
       GST_VIDEO_INFO_SIZE (vip));
 
-  if (!ensure_data (mem))
+  if (!ensure_data (mem)) {
+    g_slice_free (mfxFrameSurface1, mem->surface);
+    g_slice_free (GstMsdkSystemMemory, mem);
     return NULL;
+  }
 
   return GST_MEMORY_CAST (mem);
 }
@@ -278,6 +286,7 @@ gst_msdk_system_allocator_free (GstAllocator * allocator, GstMemory * base_mem)
 
   _aligned_free (mem->cache);
   g_slice_free (mfxFrameSurface1, mem->surface);
+  g_slice_free (GstMsdkSystemMemory, mem);
 }
 
 static GstMemory *
diff --git a/sys/msdk/gstmsdkvideomemory.c b/sys/msdk/gstmsdkvideomemory.c
index a59b68f3c4..6e173fa905 100644
--- a/sys/msdk/gstmsdkvideomemory.c
+++ b/sys/msdk/gstmsdkvideomemory.c
@@ -166,8 +166,10 @@ gst_msdk_video_memory_new (GstAllocator * base_allocator)
     return NULL;
 
   mem->surface = gst_msdk_video_allocator_get_surface (base_allocator);
-  if (!mem->surface)
+  if (!mem->surface) {
+    g_slice_free (GstMsdkVideoMemory, mem);
     return NULL;
+  }
 
   vip = &allocator->image_info;
   gst_memory_init (&mem->parent_instance, 0,
@@ -365,6 +367,14 @@ gst_msdk_video_allocator_finalize (GObject * object)
   G_OBJECT_CLASS (gst_msdk_video_allocator_parent_class)->finalize (object);
 }
 
+static void
+gst_msdk_video_allocator_free (GstAllocator * allocator, GstMemory * base_mem)
+{
+  GstMsdkVideoMemory *const mem = GST_MSDK_VIDEO_MEMORY_CAST (base_mem);
+
+  g_slice_free (GstMsdkVideoMemory, mem);
+}
+
 static void
 gst_msdk_video_allocator_class_init (GstMsdkVideoAllocatorClass * klass)
 {
@@ -374,6 +384,7 @@ gst_msdk_video_allocator_class_init (GstMsdkVideoAllocatorClass * klass)
   object_class->finalize = gst_msdk_video_allocator_finalize;
 
   allocator_class->alloc = gst_msdk_video_allocator_alloc;
+  allocator_class->free = gst_msdk_video_allocator_free;
 }
 
 static void