diff --git a/init.lua b/init.lua
index e77dcdc..dbadf9a 100644
--- a/init.lua
+++ b/init.lua
@@ -5,9 +5,7 @@ assert(dpnn.version > 1, "Please update dpnn : luarocks install dpnn")
 
 -- create global rnn table:
 rnn = {}
-rnn.version = 2
-rnn.version = 2.1 -- [get,set][Grad]HiddenState(step)
-rnn.version = 2.2 -- C rnn library
+rnn.version = 2.2 -- C rnn library : VariableLength
 
 -- c lib:
 require "paths"
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
deleted file mode 100644
index 7eab836..0000000
--- a/test/CMakeLists.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-FILE(GLOB luasrc *.lua)
-ADD_TORCH_PACKAGE(rnn/test "${src}" "${luasrc}")
diff --git a/utils.h b/utils.h
index 8a0196a..c060999 100644
--- a/utils.h
+++ b/utils.h
@@ -1,5 +1,3 @@
-#include "error.h"
-
 #define check_tensors(L, a, b) \
    do { \
       if ((a)->nDimension != (b)->nDimension) \