diff --git a/test/unit/helpers.lua b/test/unit/helpers.lua
index 84ce67da4e..544a53fa10 100644
--- a/test/unit/helpers.lua
+++ b/test/unit/helpers.lua
@@ -66,7 +66,7 @@ local function cimport(...)
   end
 
   local body = nil
-  for i=1, 3 do
+  for i=1, 10 do
     local stream = Preprocess.preprocess_stream(unpack(paths))
     body = stream:read("*a")
     stream:close()