diff --git a/GPA Calculator/Program.cs b/GPA Calculator/Program.cs
index 5ca2248..9e6da76 100644
--- a/GPA Calculator/Program.cs	
+++ b/GPA Calculator/Program.cs	
@@ -14,7 +14,7 @@ namespace GPA_Calculator
             {
                 RenderGrades();
                 inputGrade = Console.ReadLine();
-                inputGrade = inputGrade.Replace("+", "Plus").Replace("-", "Minus");
+                inputGrade = inputGrade.ToUpper().Replace("+", "Plus").Replace("-", "Minus");
                 if(Enum.TryParse<Grade>(inputGrade, out Grade grade))
                 {
                     GradesList.Add(grade);