diff --git a/src/slic3r/GUI/Gizmos/GLGizmoCut.cpp b/src/slic3r/GUI/Gizmos/GLGizmoCut.cpp
index c8142ba347..b148196714 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoCut.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoCut.cpp
@@ -182,7 +182,7 @@ void GLGizmoCut::on_render_input_window(float x, float y, float bottom_limit)
     double cut_z = m_cut_z;
     if (imperial_units)
         cut_z *= ObjectManipulation::mm_to_in;
-    ImGui::InputDouble("", &cut_z, 0.0f, 0.0f, "%.2f");
+    ImGui::InputDouble("", &cut_z, 0.0f, 0.0f, "%.2f", ImGuiInputTextFlags_CharsDecimal);
 
     ImGui::SameLine();
     m_imgui->text(imperial_units ? _L("in") : _L("mm"));
diff --git a/src/slic3r/GUI/ImGuiWrapper.cpp b/src/slic3r/GUI/ImGuiWrapper.cpp
index b8b2337fb1..03e5bdc092 100644
--- a/src/slic3r/GUI/ImGuiWrapper.cpp
+++ b/src/slic3r/GUI/ImGuiWrapper.cpp
@@ -359,7 +359,7 @@ bool ImGuiWrapper::image_button()
 
 bool ImGuiWrapper::input_double(const std::string &label, const double &value, const std::string &format)
 {
-    return ImGui::InputDouble(label.c_str(), const_cast<double*>(&value), 0.0f, 0.0f, format.c_str());
+    return ImGui::InputDouble(label.c_str(), const_cast<double*>(&value), 0.0f, 0.0f, format.c_str(), ImGuiInputTextFlags_CharsDecimal);
 }
 
 bool ImGuiWrapper::input_double(const wxString &label, const double &value, const std::string &format)