diff --git a/src/Backend/DiunaBI.Plugins.Morska/Processors/MorskaT1R1Processor.cs b/src/Backend/DiunaBI.Plugins.Morska/Processors/MorskaT1R1Processor.cs
index e83bbfe..2d31aac 100644
--- a/src/Backend/DiunaBI.Plugins.Morska/Processors/MorskaT1R1Processor.cs
+++ b/src/Backend/DiunaBI.Plugins.Morska/Processors/MorskaT1R1Processor.cs
@@ -384,7 +384,7 @@ public class MorskaT1R1Processor : MorskaBaseProcessor
             }
 
             // Get codes from sheet header
-            var codesResponse = _googleSheetValues.Get(sheetId, $"{GoogleSheetName}!C4:DC4").Execute();
+            var codesResponse = _googleSheetValues.Get(sheetId, $"{GoogleSheetName}!C4:DS4").Execute();
             var codesRow = codesResponse.Values[0];
 
             // Update monthly data (months 1-12)
@@ -430,7 +430,7 @@ public class MorskaT1R1Processor : MorskaBaseProcessor
             valueRange.Values.Add(monthValues);
         }
 
-        var update = _googleSheetValues.Update(valueRange, sheetId, $"{GoogleSheetName}!C7:DC18");
+        var update = _googleSheetValues.Update(valueRange, sheetId, $"{GoogleSheetName}!C7:DS18");
         update.ValueInputOption = SpreadsheetsResource.ValuesResource.UpdateRequest.ValueInputOptionEnum.USERENTERED;
         update.Execute();
 
@@ -461,7 +461,7 @@ public class MorskaT1R1Processor : MorskaBaseProcessor
         }
         valueRange.Values.Add(summaryValues);
 
-        var update = _googleSheetValues.Update(valueRange, sheetId, $"{GoogleSheetName}!C19:DC20");
+        var update = _googleSheetValues.Update(valueRange, sheetId, $"{GoogleSheetName}!C19:DS20");
         update.ValueInputOption = SpreadsheetsResource.ValuesResource.UpdateRequest.ValueInputOptionEnum.USERENTERED;
         update.Execute();