diff --git a/xs/src/slic3r/GUI/GLGizmo.cpp b/xs/src/slic3r/GUI/GLGizmo.cpp
index b348e83356..34d1f2efc6 100644
--- a/xs/src/slic3r/GUI/GLGizmo.cpp
+++ b/xs/src/slic3r/GUI/GLGizmo.cpp
@@ -513,7 +513,7 @@ void GLGizmoRotate::transform_to_local() const
     }
     case Y:
     {
-        ::glRotatef(90.0f, 1.0f, 0.0f, 0.0f);
+        ::glRotatef(-90.0f, 1.0f, 0.0f, 0.0f);
         ::glRotatef(180.0f, 0.0f, 0.0f, 1.0f);
         break;
     }
@@ -543,7 +543,7 @@ Vec3d GLGizmoRotate::mouse_position_in_local_plane(const Linef3& mouse_ray) cons
     case Y:
     {
         m.rotate(Eigen::AngleAxisd(-(double)PI, Vec3d::UnitZ()));
-        m.rotate(Eigen::AngleAxisd(-half_pi, Vec3d::UnitX()));
+        m.rotate(Eigen::AngleAxisd(half_pi, Vec3d::UnitX()));
         break;
     }
     default: