diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
index 4ef7fd03d..a190f631a 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
@@ -320,7 +320,7 @@ void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limi
     ImGui::PushItemWidth(slider_width + space_size);
     if (m_imgui->bbl_slider_float_style("##decimate_ratio", &m_configuration.decimate_ratio, 0.f, 100.f, format)) {
         if (m_configuration.decimate_ratio < 0.f)
-            m_configuration.decimate_ratio = 0.01f;
+            m_configuration.decimate_ratio = 0.f;
         if (m_configuration.decimate_ratio > 100.f)
             m_configuration.decimate_ratio = 100.f;
         m_configuration.fix_count_by_ratio(orig_triangle_count);
@@ -333,7 +333,7 @@ void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limi
 
     if (ImGui::BBLDragFloat("##decimate_ratio_input", &m_configuration.decimate_ratio, 0.05f, 0.0f, 0.0f, "%.2f%%")) {
         if (m_configuration.decimate_ratio < 0.f)
-            m_configuration.decimate_ratio = 0.01f;
+            m_configuration.decimate_ratio = 0.f;
         if (m_configuration.decimate_ratio > 100.f)
             m_configuration.decimate_ratio = 100.f;
         m_configuration.fix_count_by_ratio(orig_triangle_count);