diff --git a/src/lcd/jsupm_i2clcd.i b/src/lcd/jsupm_i2clcd.i
index 44050657..c4654027 100644
--- a/src/lcd/jsupm_i2clcd.i
+++ b/src/lcd/jsupm_i2clcd.i
@@ -1,5 +1,12 @@
 %module jsupm_i2clcd
 %include "../upm.i"
+%include "../carrays_uint8_t.i"
+
+%typemap(in) uint8_t * {
+  void *argp = 0 ;
+  int res = SWIG_ConvertPtr($input, &argp,SWIGTYPE_p_uint8Array, 0 |  0 );
+  $1 = (uint8_t *)(argp);
+}
 
 %include "i2clcd.h"
 %{