diff --git a/src/modules/bitarray.c b/src/modules/bitarray.c
index 0c69876d..1df3283c 100644
--- a/src/modules/bitarray.c
+++ b/src/modules/bitarray.c
@@ -175,15 +175,15 @@ static int bitarray_set( lua_State *L )
     switch( pa->elsize )
     {
       case 8:
-        pa->values[ idx ] = val;;
+        pa->values[ idx ] = ( u8 )newval;
         break;
         
       case 16:
-        *( ( u16* )pa->values + idx ) = val;
+        *( ( u16* )pa->values + idx ) = ( u16 )newval;
         break;
         
       case 32:
-        *( ( u32* )pa->values + idx ) = val;
+        *( ( u32* )pa->values + idx ) = ( u32 )newval;
         break;  
     }    
   return 0;