diff --git a/src/gmio_stl/stl_io.h b/src/gmio_stl/stl_io.h
index 218d291..7a38ade 100644
--- a/src/gmio_stl/stl_io.h
+++ b/src/gmio_stl/stl_io.h
@@ -59,7 +59,7 @@ int gmio_stla_read(struct gmio_stl_read_args* args);
  *
  *  \return Error code (see gmio_core/error.h and stl_error.h)
  *  \retval GMIO_ERROR_INVALID_MEMBLOCK_SIZE
- *          if <tt>args->core.memblock.size < GMIO_STLB_MIN_CONTENTS_SIZE</tt>
+ *          if <tt>args->core.stream_memblock.size < GMIO_STLB_MIN_CONTENTS_SIZE</tt>
  */
 GMIO_LIBSTL_EXPORT
 int gmio_stlb_read(
diff --git a/src/gmio_stl/stl_rwargs.h b/src/gmio_stl/stl_rwargs.h
index ac9ecc1..6e2c3b7 100644
--- a/src/gmio_stl/stl_rwargs.h
+++ b/src/gmio_stl/stl_rwargs.h
@@ -50,7 +50,7 @@ struct gmio_stl_read_args
      */
     gmio_streamsize_t (*func_stla_get_streamsize)(
             struct gmio_stream* stream,
-            struct gmio_memblock* memblock);
+            struct gmio_memblock* stream_memblock);
 };
 
 /*! Arguments for STL write functions */