Index: src/uk/me/parabola/imgfmt/app/trergn/LinePreparer.java
===================================================================
--- src/uk/me/parabola/imgfmt/app/trergn/LinePreparer.java	(revision 808)
+++ src/uk/me/parabola/imgfmt/app/trergn/LinePreparer.java	(working copy)
@@ -102,11 +102,6 @@
 			log.debug("y same is", ySameSign, "sign is", ySignNegative);
 		}
 
-		// first extra bit always appears to be false
-		// refers to the start point?
-		if (extraBit)
-			bw.put1(false);
-
 		for (int i = 0; i < deltas.length; i+=2) {
 			int dx = deltas[i];
 			int dy = deltas[i + 1];
@@ -116,6 +111,10 @@
 			if (log.isDebugEnabled())
 				log.debug("x delta", dx, "~", xbits);
 			assert dx >> xbits == 0 || dx >> xbits == -1;
+
+			if (extraBit)
+				bw.put1(nodes[i/2+1]);
+
 			if (xSameSign) {
 				bw.putn(abs(dx), xbits);
 			} else {
@@ -132,8 +131,6 @@
 				bw.putn(dy, ybits);
 				bw.put1(dy < 0);
 			}
-			if (extraBit)
-				bw.put1(nodes[i/2+1]);
 		}
 
 		if (log.isDebugEnabled())