diff --git a/lips/Collector.lua b/lips/Collector.lua
index 2fb21a7..b258186 100644
--- a/lips/Collector.lua
+++ b/lips/Collector.lua
@@ -108,12 +108,12 @@ function Collector:directive()
         if self:is_EOL() and name == 'ALIGN' then
             add(name)
         else
-            local size = self:number()
+            local size = self:const(nil, 'no label')
             if self:is_EOL() then
                 add(name, size)
             else
                 self:optional_comma()
-                add(name, size, self:number())
+                add(name, size, self:const(nil, 'no label'))
             end
         end
     elseif name == 'BYTE' or name == 'HALFWORD' or name == 'WORD' then
diff --git a/lips/Preproc.lua b/lips/Preproc.lua
index ab68da2..7f05eee 100644
--- a/lips/Preproc.lua
+++ b/lips/Preproc.lua
@@ -146,6 +146,9 @@ function Preproc:process(statements)
                 end
                 insert(new_statements, s)
             else
+                for j, t in ipairs(s) do
+                    self:lookup(t)
+                end
                 insert(new_statements, s)
             end
         else