diff --git a/ginfo.c b/ginfo.c
index 95b9b7add..943d1c71b 100644
--- a/ginfo.c
+++ b/ginfo.c
@@ -548,7 +548,7 @@ g_type_info_new (GIBaseInfo    *container,
   SimpleTypeBlob *type = (SimpleTypeBlob *)&typelib->data[offset];
 
   return (GITypeInfo *) g_info_new (GI_INFO_TYPE_TYPE, container, typelib, 
-				    type->reserved == 0 ? offset : type->offset);
+				    (type->reserved == 0 && type->reserved2 == 0) ? offset : type->offset);
 }
 
 /**
@@ -735,7 +735,7 @@ g_type_info_is_pointer (GITypeInfo *info)
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved == 0)
+  if (type->reserved == 0 && type->reserved2 == 0)
     return type->pointer;
   else
     {
@@ -751,7 +751,7 @@ g_type_info_get_tag (GITypeInfo *info)
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
 
-  if (type->reserved == 0)
+  if (type->reserved == 0 && type->reserved2 == 0)
     return type->tag;
   else
     {
@@ -768,7 +768,7 @@ g_type_info_get_param_type (GITypeInfo *info,
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved != 0)
+  if (!(type->reserved == 0 && type->reserved2 == 0))
     {
       ParamTypeBlob *param = (ParamTypeBlob *)&base->typelib->data[base->offset];
 
@@ -794,7 +794,7 @@ g_type_info_get_interface (GITypeInfo *info)
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved != 0)
+  if (!(type->reserved == 0 && type->reserved2 == 0))
     {
       InterfaceTypeBlob *blob = (InterfaceTypeBlob *)&base->typelib->data[base->offset];
       
@@ -811,7 +811,7 @@ g_type_info_get_array_length (GITypeInfo *info)
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved != 0)
+  if (!(type->reserved == 0 && type->reserved2 == 0))
     {
       ArrayTypeBlob *blob = (ArrayTypeBlob *)&base->typelib->data[base->offset];
 
@@ -831,7 +831,7 @@ g_type_info_is_zero_terminated (GITypeInfo *info)
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved != 0)
+  if (!(type->reserved == 0 && type->reserved2 == 0))
     {
       ArrayTypeBlob *blob = (ArrayTypeBlob *)&base->typelib->data[base->offset];
 
@@ -848,7 +848,7 @@ g_type_info_get_n_error_domains (GITypeInfo *info)
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved != 0)
+  if (!(type->reserved == 0 && type->reserved2 == 0))
     {
       ErrorTypeBlob *blob = (ErrorTypeBlob *)&base->typelib->data[base->offset];
 
@@ -866,7 +866,7 @@ g_type_info_get_error_domain (GITypeInfo *info,
   GIBaseInfo *base = (GIBaseInfo *)info;
   SimpleTypeBlob *type = (SimpleTypeBlob *)&base->typelib->data[base->offset];
   
-  if (type->reserved != 0)
+  if (!(type->reserved == 0 && type->reserved2 == 0))
     {
       ErrorTypeBlob *blob = (ErrorTypeBlob *)&base->typelib->data[base->offset];
 
@@ -1679,7 +1679,7 @@ g_constant_info_get_value (GIConstantInfo *info,
   ConstantBlob *blob = (ConstantBlob *)&base->typelib->data[base->offset];
 
   /* FIXME non-basic types ? */
-  if (blob->type.reserved == 0)
+  if (blob->type.reserved == 0 && blob->type.reserved2 == 0)
     {
       if (blob->type.pointer)
 	value->v_pointer = g_memdup (&base->typelib->data[blob->offset], blob->size);
diff --git a/gtypelib.c b/gtypelib.c
index e35fe79d0..3b7107e3a 100644
--- a/gtypelib.c
+++ b/gtypelib.c
@@ -968,7 +968,7 @@ validate_constant_blob (GTypelib     *typelib,
     }
   
   type = (SimpleTypeBlob *)&typelib->data[offset + G_STRUCT_OFFSET (ConstantBlob, type)];
-  if (type->reserved == 0)
+  if (type->reserved == 0 && type->reserved2 == 0)
     {
       if (type->tag == 0)
 	{