diff --git a/CHANGELIST.md b/CHANGELIST.md
index 90de55dd..c8e71e88 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -7,6 +7,7 @@
 - Add physical drive extensions to new tool
 - Fix build for older .NET
 - Move two extensions to a better location
+- Fix XGD3 SS ranges
 
 ### 3.2.1 (2024-08-05)
 
diff --git a/MPF.Processors/ProcessingTool.cs b/MPF.Processors/ProcessingTool.cs
index 99ebd0c9..e3cbca6d 100644
--- a/MPF.Processors/ProcessingTool.cs
+++ b/MPF.Processors/ProcessingTool.cs
@@ -1174,12 +1174,18 @@ namespace MPF.Processors
                     startLBA[i] = (1913776 + 0x030000) * 2 - (startPSN ^ 0xFFFFFF) - 0x030000 - 1;
                     endLBA[i] = (1913776 + 0x030000) * 2 - (endPSN ^ 0xFFFFFF) - 0x030000 - 1;
                 }
-                else if (xgdType > 1 && startPSN >= (1913760 + 0x030000))
+                else if (xgdType == 2 && startPSN >= (1913760 + 0x030000))
                 {
-                    // Layer 1 of XGD2 or XGD3
+                    // Layer 1 of XGD2
                     startLBA[i] = (1913760 + 0x030000) * 2 - (startPSN ^ 0xFFFFFF) - 0x030000 - 1;
                     endLBA[i] = (1913760 + 0x030000) * 2 - (endPSN ^ 0xFFFFFF) - 0x030000 - 1;
                 }
+                else if (xgdType == 3 && startPSN >= (2133520 + 0x030000))
+                {
+                    // Layer 1 of XGD3
+                    startLBA[i] = (2133520 + 0x030000) * 2 - (startPSN ^ 0xFFFFFF) - 0x030000 - 1;
+                    endLBA[i] = (2133520 + 0x030000) * 2 - (endPSN ^ 0xFFFFFF) - 0x030000 - 1;
+                }
                 else
                 {
                     // Layer 0