diff --git a/EGkCalcPocketing.h b/EGkCalcPocketing.h
index 219ffe2..8f0dddf 100644
--- a/EGkCalcPocketing.h
+++ b/EGkCalcPocketing.h
@@ -35,7 +35,8 @@ EGK_EXPORT bool CalcZigZagInfill( const ISurfFlatRegion* pSfr, double dStep, boo
 enum { POCKET_ZIGZAG = 0,
        POCKET_ONEWAY = 1,
        POCKET_SPIRALIN = 2,
-       POCKET_SPIRALOUT = 3} ;
+       POCKET_SPIRALOUT = 3,
+       POCKET_CONFORMAL_ZIGZAG = 4} ;
 
 enum { TEMP_PROP_INVALID = -1,
        TEMP_PROP_CLOSE_EDGE = 0,