diff --git a/libs/gst/base/gstbytereader.h b/libs/gst/base/gstbytereader.h
index f25c3b54ef..8ce76df334 100644
--- a/libs/gst/base/gstbytereader.h
+++ b/libs/gst/base/gstbytereader.h
@@ -246,7 +246,8 @@ gst_byte_reader_get_data_unchecked (GstByteReader * reader, guint size)
 static inline guint8 *
 gst_byte_reader_dup_data_unchecked (GstByteReader * reader, guint size)
 {
-  return g_memdup (gst_byte_reader_get_data_unchecked (reader, size), size);
+  gconstpointer data = gst_byte_reader_get_data_unchecked (reader, size);
+  return (guint8 *) g_memdup (data, size);
 }
 
 /* Unchecked variants that should not be used */
diff --git a/libs/gst/base/gstbytewriter.h b/libs/gst/base/gstbytewriter.h
index 186480d6cd..8fcd53da6f 100644
--- a/libs/gst/base/gstbytewriter.h
+++ b/libs/gst/base/gstbytewriter.h
@@ -183,7 +183,7 @@ _gst_byte_writer_next_pow2 (guint n)
 static inline gboolean
 _gst_byte_writer_ensure_free_space_inline (GstByteWriter * writer, guint size)
 {
-  guint8 *data;
+  gpointer data;
 
   if (G_LIKELY (size <= writer->alloc_size - writer->parent.byte))
     return TRUE;
@@ -197,7 +197,7 @@ _gst_byte_writer_ensure_free_space_inline (GstByteWriter * writer, guint size)
   if (G_UNLIKELY (data == NULL))
     return FALSE;
 
-  writer->parent.data = data;
+  writer->parent.data = (guint8 *) data;
 
   return TRUE;
 }