diff --git a/app/AsusACPI.cs b/app/AsusACPI.cs
index 763bcd99..a091e4cb 100644
--- a/app/AsusACPI.cs
+++ b/app/AsusACPI.cs
@@ -514,16 +514,25 @@ public class AsusACPI
             default: fan_mode = 0; break;
         }
 
+        byte[] result;
+
         switch (device)
         {
             case AsusFan.GPU:
-                return DeviceGetBuffer(DevsGPUFanCurve, fan_mode);
+                result = DeviceGetBuffer(DevsGPUFanCurve, fan_mode);
+                break;
             case AsusFan.Mid:
-                return DeviceGetBuffer(DevsMidFanCurve, fan_mode);
+                result = DeviceGetBuffer(DevsMidFanCurve, fan_mode);
+                break;
             default:
-                return DeviceGetBuffer(DevsCPUFanCurve, fan_mode);
+                result = DeviceGetBuffer(DevsCPUFanCurve, fan_mode);
+                break;
         }
 
+        Logger.WriteLine($"GetFan {device} :" + BitConverter.ToString(result));
+
+        return result;
+
     }
 
     public static bool IsInvalidCurve(byte[] curve)
diff --git a/app/Fans.cs b/app/Fans.cs
index cdc85c34..796a02c7 100644
--- a/app/Fans.cs
+++ b/app/Fans.cs
@@ -953,7 +953,7 @@ namespace GHelper
             int chartCount = 2;
 
             // Middle / system fan check
-            if (!AsusACPI.IsEmptyCurve(Program.acpi.GetFanCurve(AsusFan.Mid)))
+            if (!AsusACPI.IsEmptyCurve(Program.acpi.GetFanCurve(AsusFan.Mid)) || Program.acpi.GetFan(AsusFan.Mid) >= 0)
             {
                 AppConfig.Set("mid_fan", 1);
                 chartCount++;