diff --git a/lib/std/fs.zig b/lib/std/fs.zig
index c3e8d69b0d..99383277a7 100644
--- a/lib/std/fs.zig
+++ b/lib/std/fs.zig
@@ -49,17 +49,13 @@ pub const MAX_PATH_BYTES = switch (builtin.os.tag) {
     else => @compileError("Unsupported OS"),
 };
 
-/// Base64, replacing the standard `+/` with `-_` so that it can be used in a file name on any filesystem.
-pub const base64_encoder = base64.Base64Encoder.init(
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_",
-    base64.standard_pad_char,
-);
+pub const base64_alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
 
-/// Base64, replacing the standard `+/` with `-_` so that it can be used in a file name on any filesystem.
-pub const base64_decoder = base64.Base64Decoder.init(
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_",
-    base64.standard_pad_char,
-);
+/// Base64 encoder, replacing the standard `+/` with `-_` so that it can be used in a file name on any filesystem.
+pub const base64_encoder = base64.Base64Encoder.init(base64_alphabet, base64.standard_pad_char);
+
+/// Base64 decoder, replacing the standard `+/` with `-_` so that it can be used in a file name on any filesystem.
+pub const base64_decoder = base64.Base64Decoder.init(base64_alphabet, base64.standard_pad_char);
 
 /// Whether or not async file system syscalls need a dedicated thread because the operating
 /// system does not support non-blocking I/O on the file system.