diff --git a/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py b/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py
index 7b328e10e6..70de42ab3b 100644
--- a/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py
+++ b/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py
@@ -64,7 +64,11 @@ class VersionUpgrade462to47(VersionUpgrade):
                 ironing_inset = parser["values"]["ironing_inset"]
                 if ironing_inset.startswith("="):
                     ironing_inset = ironing_inset[1:]
-                ironing_inset = "=(" + ironing_inset + ") + skin_line_width * (1.0 - ironing_flow) / 2"
+                if "ironing_pattern" in parser["values"] and parser["values"]["ironing_pattern"] == "concentric":
+                    correction = " + ironing_line_spacing - skin_line_width * (1.0 + ironing_flow / 100) / 2"
+                else:  # If ironing_pattern doesn't exist, it means the default (zigzag) is selected
+                    correction = " + skin_line_width * (1.0 - ironing_flow / 100) / 2"
+                ironing_inset = "=(" + ironing_inset + ")" + correction
                 parser["values"]["ironing_inset"] = ironing_inset
 
         result = io.StringIO()
diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 2aa9304a70..9ab33b3a6c 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -1575,7 +1575,7 @@
                     "type": "float",
                     "unit": "mm",
                     "default_value": 0.35,
-                    "value": "wall_line_width_0 / 2 + skin_line_width * (1.0 - ironing_flow) / 2",
+                    "value": "wall_line_width_0 / 2 + (ironing_line_spacing - skin_line_width * (1.0 + ironing_flow / 100) / 2 if ironing_pattern == 'concentric' else skin_line_width * (1.0 - ironing_flow / 100) / 2)",
                     "minimum_value_warning": "0",
                     "maximum_value_warning": "wall_line_width_0",
                     "enabled": "ironing_enabled",
diff --git a/resources/definitions/hms434.def.json b/resources/definitions/hms434.def.json
index 07ea24b2c2..cd20906ccc 100644
--- a/resources/definitions/hms434.def.json
+++ b/resources/definitions/hms434.def.json
@@ -104,7 +104,7 @@
         "skin_outline_count":        {"value": "0"},
         "ironing_line_spacing":      {"value": "line_width / 4 * 3"},
         "ironing_flow":              {"value": "0"},
-        "ironing_inset":             {"value": "ironing_line_spacing + skin_line_width * (1.0 - ironing_flow) / 2"},
+        "ironing_inset":             {"value": "ironing_line_spacing + (ironing_line_spacing - skin_line_width * (1.0 + ironing_flow / 100) / 2 if ironing_pattern == 'concentric' else skin_line_width * (1.0 - ironing_flow / 100) / 2)"},
         "speed_ironing":             {"value": "150"},
  
         "infill_sparse_density": {"value": 30},
diff --git a/resources/definitions/skriware_2.def.json b/resources/definitions/skriware_2.def.json
index 3b127b9a8f..ab5532db81 100644
--- a/resources/definitions/skriware_2.def.json
+++ b/resources/definitions/skriware_2.def.json
@@ -345,7 +345,7 @@
             "value": "0.8"
         },
         "ironing_inset": {
-            "value": "0.2 + skin_line_width * (1.0 - ironing_flow) / 2"
+            "value": "0.2 + (ironing_line_spacing - skin_line_width * (1.0 + ironing_flow / 100) / 2 if ironing_pattern == 'concentric' else skin_line_width * (1.0 - ironing_flow / 100) / 2)"
         },
         "jerk_travel": {
             "value": "10"