diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 5fa4dfb01..3aad02f91 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -2318,7 +2318,7 @@ void PrintConfigDef::init_fff_params()
     def->set_default_value(new ConfigOptionInt(1));
 
     auto support_material_interface_layers = def = this->add("support_material_interface_layers", coInt);
-    def->gui_type = "f_enum_open";
+    def->gui_type = "i_enum_open";
     def->label = L("Top interface layers");
     def->category = L("Support material");
     def->tooltip = L("Number of interface layers to insert between the object(s) and support material.");
@@ -2336,7 +2336,7 @@ void PrintConfigDef::init_fff_params()
     def->set_default_value(new ConfigOptionInt(3));
 
     def = this->add("support_material_bottom_interface_layers", coInt);
-    def->gui_type = "f_enum_open";
+    def->gui_type = "i_enum_open";
     def->label = L("Bottom interface layers");
     def->category = L("Support material");
     def->tooltip = L("Number of interface layers to insert between the object(s) and support material. "
diff --git a/src/slic3r/GUI/Field.cpp b/src/slic3r/GUI/Field.cpp
index 7303f4d72..02ef87775 100644
--- a/src/slic3r/GUI/Field.cpp
+++ b/src/slic3r/GUI/Field.cpp
@@ -965,15 +965,27 @@ void Choice::BUILD() {
             }
 
             if (is_defined_input_value<choice_ctrl>(window, m_opt.type)) {
-                if (m_opt.type == coFloatOrPercent) {
+				switch (m_opt.type) {
+				case coFloatOrPercent:
+				{
                     std::string old_val = !m_value.empty() ? boost::any_cast<std::string>(m_value) : "";
                     if (old_val == boost::any_cast<std::string>(get_value()))
                         return;
+					break;
                 }
-                else {
-                    double old_val = !m_value.empty() ? boost::any_cast<double>(m_value) : -99999;
-                    if (fabs(old_val - boost::any_cast<double>(get_value())) <= 0.0001)
+				case coInt:
+				{
+                    int old_val = !m_value.empty() ? boost::any_cast<int>(m_value) : 0;
+                    if (old_val == boost::any_cast<int>(get_value()))
                         return;
+					break;
+				}
+				default:
+				{
+					double old_val = !m_value.empty() ? boost::any_cast<double>(m_value) : -99999;
+					if (fabs(old_val - boost::any_cast<double>(get_value())) <= 0.0001)
+						return;
+				}
                 }
                 on_change_field();
             }