diff --git a/Arduino Examples/PMW3389DM-polling/PMW3389DM-polling.ino b/Arduino Examples/PMW3389DM-polling/PMW3389DM-polling.ino
index 484a3d8..b9dc334 100644
--- a/Arduino Examples/PMW3389DM-polling/PMW3389DM-polling.ino	
+++ b/Arduino Examples/PMW3389DM-polling/PMW3389DM-polling.ino	
@@ -203,8 +203,8 @@ void UpdatePointer(void){
     adns_write_reg(Motion, 0x01);
     adns_read_reg(Motion);
 
-    xydat[0] = (int)adns_read_reg(Delta_X_L);
-    xydat[1] = (int)adns_read_reg(Delta_Y_L);
+    xydat[0] = (int)adns_read_reg(Delta_X_L) | (int)adns_read_reg(Delta_X_H) << 8;
+    xydat[1] = (int)adns_read_reg(Delta_Y_L) | (int)adns_read_reg(Delta_Y_H) << 8;
     
     movementflag=1;
     }
@@ -237,8 +237,8 @@ void dispRegisters(void){
 
 int convTwosComp(int b){
   //Convert from 2's complement
-  if(b & 0x80){
-    b = -1 * ((b ^ 0xff) + 1);
+  if(b & 0x8000){
+    b = -1 * ((b ^ 0xffff) + 1);
     }
   return b;
   }