diff --git a/RhSolutions.AddIn/Services/GuessReader.cs b/RhSolutions.AddIn/Services/GuessReader.cs
index c3f36e4..f1327d5 100644
--- a/RhSolutions.AddIn/Services/GuessReader.cs
+++ b/RhSolutions.AddIn/Services/GuessReader.cs
@@ -1,5 +1,4 @@
-using Microsoft.Office.Interop.Excel;
-using System.IO;
+using System.IO;
 
 namespace RhSolutions.Services;
 
@@ -95,7 +94,7 @@ public class GuessReader : IReader
                 continue;
             }
 
-            if (ProductSku.TryParse(currentCell.ToString(), out IEnumerable<ProductSku> skus))
+            if (ProductSku.TryParse(currentCell.ToString(), out _))
             {
                 successCounter++;
             }
@@ -120,37 +119,38 @@ public class GuessReader : IReader
             return false;
         }
 
-        for (int row = 1; row < column.Rows.Count + 1; row++)
+        if (column.Rows.Count == 1)
         {
-            object currentCell = column.Rows.Count == 1 ? cells : cells[row, 1];
-            if (currentCell == null)
-            {
-                continue;
-            }
+            double? value = cells as double?;
 
-            double? value = currentCell as double?;
-
-            if (value == null || value == 0)
-            {
-                continue;
-            }
-
-            if (value > maxValue)
-            {
-                return false;
-            }
-
-            if (column.Rows.Count == 1)
-            {
-                return true;
-            }
-
-            if (++successCounter > 1)
-            {
-                return true;
-            }
+            return value != null
+                && value != 0
+                && value < maxValue;
         }
 
+        else
+        {
+            for (int row = 1; row < column.Rows.Count + 1; row++)
+            {
+                object currentCell = cells[row, 1];
+                double? value = currentCell as double?;
+
+                if (value == null || value == 0)
+                {
+                    continue;
+                }
+
+                if (value > maxValue)
+                {
+                    return false;
+                }
+
+                if (++successCounter > 1)
+                {
+                    return true;
+                }
+            }
+
             return (column.Rows.Count > 1 && successCounter > 0)
                 || successCounter > 1;
         }