diff --git a/src/compositor.c b/src/compositor.c
index 220fefb9..ac39fe9b 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -460,17 +460,6 @@ weston_surface_to_global_fixed(struct weston_surface *surface,
 	*y = wl_fixed_from_double(yf);
 }
 
-WL_EXPORT void
-weston_surface_to_global(struct weston_surface *surface,
-			 int32_t sx, int32_t sy, int32_t *x, int32_t *y)
-{
-	GLfloat xf, yf;
-
-	weston_surface_to_global_float(surface, sx, sy, &xf, &yf);
-	*x = floorf(xf);
-	*y = floorf(yf);
-}
-
 static void
 surface_from_global_float(struct weston_surface *surface,
 			  GLfloat x, GLfloat y, GLfloat *sx, GLfloat *sy)
diff --git a/src/compositor.h b/src/compositor.h
index 2d52048d..646e1e7e 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -447,9 +447,6 @@ struct weston_surface {
 void
 weston_surface_update_transform(struct weston_surface *surface);
 
-void
-weston_surface_to_global(struct weston_surface *surface,
-			 int32_t sx, int32_t sy, int32_t *x, int32_t *y);
 void
 weston_surface_to_global_fixed(struct weston_surface *surface,
 			       wl_fixed_t sx, wl_fixed_t sy,
diff --git a/src/shell.c b/src/shell.c
index 25a9677f..879433c8 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -176,8 +176,8 @@ struct rotate_grab {
 	struct shell_grab base;
 	struct weston_matrix rotation;
 	struct {
-		int32_t x;
-		int32_t y;
+		GLfloat x;
+		GLfloat y;
 	} center;
 };
 
@@ -1896,10 +1896,10 @@ rotate_binding(struct wl_seat *seat, uint32_t time, uint32_t button,
 
 	shell_grab_init(&rotate->base, &rotate_grab_interface, surface);
 
-	weston_surface_to_global(surface->surface,
-				 surface->surface->geometry.width / 2,
-				 surface->surface->geometry.height / 2,
-				 &rotate->center.x, &rotate->center.y);
+	weston_surface_to_global_float(surface->surface,
+				       surface->surface->geometry.width / 2,
+				       surface->surface->geometry.height / 2,
+				       &rotate->center.x, &rotate->center.y);
 
 	wl_pointer_start_grab(seat->pointer, &rotate->base.grab);