diff --git a/src/system.pas b/src/system.pas
index 66d696b3..ba7016b6 100644
--- a/src/system.pas
+++ b/src/system.pas
@@ -55,6 +55,7 @@ type
     Void = ^uInt32;
 
     //Alternate Types
+    UBit2 = 0..(1 shl 2) - 1;
     UBit3 = 0..(1 shl 3) - 1;
     UBit4 = 0..(1 shl 4) - 1;
     UBit20 = 0..(1 shl 20) - 1;