diff --git a/src/modules/poweraccent/PowerAccent.Core/Languages.cs b/src/modules/poweraccent/PowerAccent.Core/Languages.cs
index 2917feff91..73dca3ee72 100644
--- a/src/modules/poweraccent/PowerAccent.Core/Languages.cs
+++ b/src/modules/poweraccent/PowerAccent.Core/Languages.cs
@@ -230,7 +230,7 @@ namespace PowerAccent.Core
                 LetterKey.VK_SLASH_ => new[] { "÷", "√" },
                 LetterKey.VK_DIVIDE_ => new[] { "÷", "√" },
                 LetterKey.VK_MULTIPLY_ => new[] { "×", "⋅" },
-                LetterKey.VK_PLUS => new[] { "≤", "≥", "≠", "≈", "≙", "⊕", "⊗", "∓", "≅", "≡" },
+                LetterKey.VK_PLUS => new[] { "≤", "≥", "≠", "≈", "≙", "⊕", "⊗", "±", "≅", "≡", "₊", "⁺" },
                 LetterKey.VK_BACKSLASH => new[] { "`", "~" },
                 _ => Array.Empty<string>(),
             };
@@ -546,10 +546,9 @@ namespace PowerAccent.Core
                 LetterKey.VK_E => new[] { "é", "ê", "€" },
                 LetterKey.VK_I => new[] { "í" },
                 LetterKey.VK_O => new[] { "ô", "ó", "õ", "º" },
-                LetterKey.VK_P => new[] { "π" },
                 LetterKey.VK_S => new[] { "$" },
                 LetterKey.VK_U => new[] { "ú" },
-                LetterKey.VK_COMMA => new[] { "≤", "≥", "≠", "≈", "≙", "±", "₊", "⁺", "“", "”", "‘", "’", "«", "»" },
+                LetterKey.VK_COMMA => new[] { "“", "”", "‘", "’", "«", "»" },
                 _ => Array.Empty<string>(),
             };
         }
@@ -728,7 +727,7 @@ namespace PowerAccent.Core
                 LetterKey.VK_Y => new[] { "ױ" },
                 LetterKey.VK_COMMA => new[] { "”", "’", "'", "״", "׳" },
                 LetterKey.VK_PERIOD => new[] { "\u05ab", "\u05bd", "\u05bf" },
-                LetterKey.VK_MINUS => new[] { "–", "־" },
+                LetterKey.VK_MINUS => new[] { "־" },
                 _ => Array.Empty<string>(),
             };
         }
diff --git a/src/modules/poweraccent/PowerAccent.Core/PowerAccent.cs b/src/modules/poweraccent/PowerAccent.Core/PowerAccent.cs
index d538d5d139..4811118adb 100644
--- a/src/modules/poweraccent/PowerAccent.Core/PowerAccent.cs
+++ b/src/modules/poweraccent/PowerAccent.Core/PowerAccent.cs
@@ -358,20 +358,21 @@ public partial class PowerAccent : IDisposable
 
     public static string[] ToUpper(string[] array)
     {
-        string[] result = new string[array.Length];
+        List<string> result = new(array.Length);
         for (int i = 0; i < array.Length; i++)
         {
             switch (array[i])
             {
-                case "ß": result[i] = "ẞ"; break;
-                case "ǰ": result[i] = "J\u030c"; break;
-                case "ı\u0307\u0304": result[i] = "İ\u0304"; break;
-                case "ı": result[i] = "İ"; break;
-                case "ᵛ": result[i] = "ⱽ"; break;
-                default: result[i] = array[i].ToUpper(System.Globalization.CultureInfo.InvariantCulture); break;
+                case "ß": result.Add("ẞ"); break;
+                case "ǰ": result.Add("J\u030c"); break;
+                case "ı\u0307\u0304": result.Add("İ\u0304"); break;
+                case "ı": result.Add("İ"); break;
+                case "ᵛ": result.Add("ⱽ"); break;
+                case "ϑ": break;
+                default: result.Add(array[i].ToUpper(CultureInfo.InvariantCulture)); break;
             }
         }
 
-        return result;
+        return [..result];
     }
 }