diff --git a/RGB.NET.Core/Helper/ConversionHelper.cs b/RGB.NET.Core/Helper/ConversionHelper.cs
index 56bbf62..cf96a36 100644
--- a/RGB.NET.Core/Helper/ConversionHelper.cs
+++ b/RGB.NET.Core/Helper/ConversionHelper.cs
@@ -20,10 +20,10 @@
             for (int bx = 0, cx = 0; bx < bytes.Length; ++bx, ++cx)
             {
                 byte b = ((byte)(bytes[bx] >> 4));
-                c[cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
+                c[cx] = (char)(b > 9 ? b + 0x37: b + 0x30);
 
                 b = ((byte)(bytes[bx] & 0x0F));
-                c[++cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
+                c[++cx] = (char)(b > 9 ? b + 0x37: b + 0x30);
             }
 
             return new string(c);