diff --git a/mouse/goMouse.h b/mouse/goMouse.h
index af7e663..bbe9d72 100644
--- a/mouse/goMouse.h
+++ b/mouse/goMouse.h
@@ -60,10 +60,11 @@ int drag_mouse(int32_t x, int32_t y, MMMouseButton button){
 	return 0;
 }
 
-bool move_mouse_smooth(size_t x, size_t y, double lowSpeed,
+bool move_mouse_smooth(int32_t x, int32_t y, double lowSpeed,
 	double highSpeed, int msDelay){
-	MMPoint point;
-	point = MMPointMake(x, y);
+	MMPointInt32 point;
+	point = MMPointInt32Make(x, y);
+	
 	bool cbool = smoothlyMoveMouse(point, lowSpeed, highSpeed);
 	microsleep(msDelay);
 
diff --git a/mouse/mouse.h b/mouse/mouse.h
index 4438f2d..7dff62a 100644
--- a/mouse/mouse.h
+++ b/mouse/mouse.h
@@ -78,7 +78,7 @@ void dragMouse(MMPointInt32 point, const MMMouseButton button);
  *
  * Returns false if unsuccessful (i.e. a point was hit that is outside of the
  * screen boundaries), or true if successful. */
-bool smoothlyMoveMouse(MMPoint endPoint, double lowSpeed, double highSpeed);
+bool smoothlyMoveMouse(MMPointInt32 endPoint, double lowSpeed, double highSpeed);
 // bool smoothlyMoveMouse(MMPoint point);
 
 /* Returns the coordinates of the mouse on the current screen. */
diff --git a/mouse/mouse_c.h b/mouse/mouse_c.h
index 5e5194b..245f618 100644
--- a/mouse/mouse_c.h
+++ b/mouse/mouse_c.h
@@ -402,7 +402,7 @@ static double crude_hypot(double x, double y){
 	return ((M_SQRT2 - 1.0) * small) + big;
 }
 
-bool smoothlyMoveMouse(MMPoint endPoint, double lowSpeed, double highSpeed){
+bool smoothlyMoveMouse(MMPointInt32 endPoint, double lowSpeed, double highSpeed){
 	MMPointInt32 pos = getMousePos();
 	MMSizeInt32 screenSize = getMainDisplaySize();
 	double velo_x = 0.0, velo_y = 0.0;
@@ -432,7 +432,7 @@ bool smoothlyMoveMouse(MMPoint endPoint, double lowSpeed, double highSpeed){
 			return false;
 		}
 
-		moveMouse(MMPointInt32Make((int32_t)pos.x, (int32_t)pos.y));
+		moveMouse(pos);
 
 		/* Wait 1 - 3 milliseconds. */
 		microsleep(DEADBEEF_UNIFORM(lowSpeed, highSpeed));
diff --git a/robotgo.go b/robotgo.go
index 5089b90..c05fe55 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -401,8 +401,8 @@ func MoveMouseSmooth(x, y int, args ...interface{}) bool {
 //
 // robotgo.MoveSmooth(x, y int, low, high float64, mouseDelay int)
 func MoveSmooth(x, y int, args ...interface{}) bool {
-	cx := C.size_t(x)
-	cy := C.size_t(y)
+	cx := C.int32_t(x)
+	cy := C.int32_t(y)
 
 	var (
 		mouseDelay = 10