diff --git a/src/libeis-client.c b/src/libeis-client.c
index 7cbe3cc..101271f 100644
--- a/src/libeis-client.c
+++ b/src/libeis-client.c
@@ -202,7 +202,7 @@ client_new_device(struct eis_client *client,
 
 static int
 client_pointer_rel(struct eis_client *client, uint32_t deviceid,
-		   int32_t x, int32_t y)
+		   double x, double y)
 {
 	struct eis_device *device;
 
diff --git a/src/libeis-device.c b/src/libeis-device.c
index 7a81dc0..0604158 100644
--- a/src/libeis-device.c
+++ b/src/libeis-device.c
@@ -192,7 +192,7 @@ eis_device_keyboard_get_keymap(struct eis_device *device)
 
 int
 eis_device_pointer_rel(struct eis_device *device,
-		       int x, int y)
+		       double x, double y)
 {
 	if (!eis_device_has_capability(device, EIS_DEVICE_CAP_POINTER))
 		return -EINVAL;
diff --git a/src/libeis-private.h b/src/libeis-private.h
index a12956d..c0d835f 100644
--- a/src/libeis-private.h
+++ b/src/libeis-private.h
@@ -119,7 +119,7 @@ struct eis_event {
 
 	union {
 		struct {
-			int dx, dy; /* relative motion */
+			double dx, dy; /* relative motion */
 			uint32_t button;
 			bool button_is_press;
 		} pointer;
@@ -183,7 +183,8 @@ eis_device_keyboard_set_keymap(struct eis_device *device,
 
 int
 eis_device_pointer_rel(struct eis_device *device,
-		       int x, int y);
+		       double x, double y);
+
 int
 eis_device_pointer_button(struct eis_device *device,
 			  uint32_t button, bool state);
diff --git a/test/test-ei.c b/test/test-ei.c
index 1e3f72e..d110c13 100644
--- a/test/test-ei.c
+++ b/test/test-ei.c
@@ -422,6 +422,54 @@ MUNIT_TEST(test_ei_device_add_zero_caps)
 	return MUNIT_OK;
 }
 
+MUNIT_TEST(test_ei_device_pointer_rel)
+{
+	_cleanup_peck_ struct peck *peck = peck_new();
+	_cleanup_ei_device_ struct ei_device *device = NULL;
+
+	peck_enable_eis_behavior(peck, PECK_EIS_BEHAVIOR_ACCEPT_ALL);
+	peck_enable_ei_behavior(peck, PECK_EI_BEHAVIOR_AUTODEVICES);
+	peck_dispatch_until_stable(peck);
+
+	with_client(peck) {
+		device = ei_device_new(ei);
+		munit_assert_not_null(device);
+		ei_device_configure_name(device, __func__);
+
+		ei_device_configure_capability(device, EI_DEVICE_CAP_POINTER);
+		ei_device_add(device);
+	}
+
+	peck_dispatch_until_stable(peck);
+
+	with_client(peck) {
+		ei_device_pointer_motion(device, 1, 2);
+		ei_device_pointer_motion(device, 0.3, 1.4);
+		ei_device_pointer_motion(device, 100, 200);
+	}
+
+	peck_dispatch_until_stable(peck);
+
+	with_server(peck) {
+		_cleanup_eis_event_ struct eis_event *first =
+			peck_eis_next_event(eis, EIS_EVENT_POINTER_MOTION);
+		munit_assert_double_equal(eis_event_pointer_get_dx(first), 1.0, 2 /* precision */);
+		munit_assert_double_equal(eis_event_pointer_get_dy(first), 2.0, 2 /* precision */);
+
+		_cleanup_eis_event_ struct eis_event *second =
+			peck_eis_next_event(eis, EIS_EVENT_POINTER_MOTION);
+		munit_assert_double_equal(eis_event_pointer_get_dx(second), 0.3, 2 /* precision */);
+		munit_assert_double_equal(eis_event_pointer_get_dy(second), 1.4, 2 /* precision */);
+
+		_cleanup_eis_event_ struct eis_event *third =
+			peck_eis_next_event(eis, EIS_EVENT_POINTER_MOTION);
+		munit_assert_double_equal(eis_event_pointer_get_dx(third), 100, 2 /* precision */);
+		munit_assert_double_equal(eis_event_pointer_get_dy(third), 200, 2 /* precision */);
+	}
+
+	return MUNIT_OK;
+}
+
 int
 main(int argc, char **argv)
 {