diff --git a/src/libeis-event.c b/src/libeis-event.c
index aeae6a2..8fa149b 100644
--- a/src/libeis-event.c
+++ b/src/libeis-event.c
@@ -133,7 +133,7 @@ check_event_type(struct eis_event *event,
 		return retval_; \
 
 _public_ double
-eis_event_pointer_get_x(struct eis_event *event)
+eis_event_pointer_get_dx(struct eis_event *event)
 {
 	require_event_type(event, 0.0,
 			   EIS_EVENT_POINTER_MOTION,
@@ -142,11 +142,11 @@ eis_event_pointer_get_x(struct eis_event *event)
 			   EIS_EVENT_POINTER_SCROLL,
 			   EIS_EVENT_POINTER_SCROLL_DISCRETE);
 
-	return event->pointer.x;
+	return event->pointer.dx;
 }
 
 _public_ double
-eis_event_pointer_get_y(struct eis_event *event)
+eis_event_pointer_get_dy(struct eis_event *event)
 {
 	require_event_type(event, 0.0,
 			   EIS_EVENT_POINTER_MOTION,
@@ -155,7 +155,7 @@ eis_event_pointer_get_y(struct eis_event *event)
 			   EIS_EVENT_POINTER_SCROLL,
 			   EIS_EVENT_POINTER_SCROLL_DISCRETE);
 
-	return event->pointer.y;
+	return event->pointer.dy;
 }
 
 _public_ uint32_t
diff --git a/src/libeis-private.h b/src/libeis-private.h
index 0825bda..8043231 100644
--- a/src/libeis-private.h
+++ b/src/libeis-private.h
@@ -103,7 +103,7 @@ struct eis_event {
 
 	union {
 		struct {
-			int x, y; /* relative motion */
+			int dx, dy; /* relative motion */
 			uint32_t button;
 			bool button_is_press;
 		} pointer;
diff --git a/src/libeis.c b/src/libeis.c
index 906dc23..7542ea8 100644
--- a/src/libeis.c
+++ b/src/libeis.c
@@ -139,12 +139,12 @@ eis_queue_removed_event(struct eis_device *device)
 
 void
 eis_queue_pointer_rel_event(struct eis_device *device,
-			    double x, double y)
+			    double dx, double dy)
 {
 	struct eis_event *e = eis_event_new_for_device(device);
 	e->type = EIS_EVENT_POINTER_MOTION;
-	e->pointer.x = x;
-	e->pointer.y = y;
+	e->pointer.dx = dx;
+	e->pointer.dy = dy;
 	eis_queue_event(e);
 }
 
diff --git a/src/libeis.h b/src/libeis.h
index d5c5867..fadfb00 100644
--- a/src/libeis.h
+++ b/src/libeis.h
@@ -426,18 +426,18 @@ struct eis_device *
 eis_event_get_device(struct eis_event *event);
 
 /**
- * For an event of type @ref EIS_EVENT_POINTER_MOTION return the x movement
- * in logical pixels.
+ * For an event of type @ref EIS_EVENT_POINTER_MOTION return the relative x
+ * movement in logical pixels.
  */
 double
-eis_event_pointer_get_x(struct eis_event *event);
+eis_event_pointer_get_dx(struct eis_event *event);
 
 /**
- * For an event of type @ref EIS_EVENT_POINTER_MOTION return the y movement
- * in logical pixels.
+ * For an event of type @ref EIS_EVENT_POINTER_MOTION return the relative y
+ * movement in logical pixels.
  */
 double
-eis_event_pointer_get_y(struct eis_event *event);
+eis_event_pointer_get_dy(struct eis_event *event);
 
 /**
  * For an event of type @ref EIS_EVENT_POINTER_MOTION_ABSOLUTE return the x
diff --git a/tools/eis-socket-server.c b/tools/eis-socket-server.c
index f519091..fcbb355 100644
--- a/tools/eis-socket-server.c
+++ b/tools/eis-socket-server.c
@@ -127,8 +127,8 @@ int main(int argc, char **argv)
 			case EIS_EVENT_POINTER_MOTION:
 				{
 				printf("server: motion by %.2f/%.2f\n",
-				       eis_event_pointer_get_x(e),
-				       eis_event_pointer_get_y(e));
+				       eis_event_pointer_get_dx(e),
+				       eis_event_pointer_get_dy(e));
 				}
 				break;
 			case EIS_EVENT_POINTER_BUTTON: