diff --git a/include/macros.h b/include/macros.h
index 9ee2e9d..eea4476 100644
--- a/include/macros.h
+++ b/include/macros.h
@@ -15,10 +15,11 @@
 #define max(a,b)    \
         (a)-(b)>0?(a):(b)
 // add 2 vector and store in a third vector
-#define addVector2(v0, v1, v2)                                         \
-    (v2)->vx = (v0)->vx + (v1)->vx,                                    \
-    (v2)->vy = (v0)->vy + (v1)->vy,                                    \
-    (v2)->vz = (v0)->vz + (v1)->vz                                     \
+#define addVector2(v0, v1, v2)      \
+    (v2)->vx = (v0)->vx + (v1)->vx, \
+    (v2)->vy = (v0)->vy + (v1)->vy, \
+    (v2)->vz = (v0)->vz + (v1)->vz, \
+    (v2)->pad = (v0)->pad + (v1)->pad \
     
 // substract vector
 #define subVector(v0, v1) \