diff --git a/lib/std/crypto/chacha20.zig b/lib/std/crypto/chacha20.zig
index 0386894b9a..28afcdfaff 100644
--- a/lib/std/crypto/chacha20.zig
+++ b/lib/std/crypto/chacha20.zig
@@ -469,7 +469,7 @@ pub fn chacha20poly1305Seal(dst: []u8, plaintext: []const u8, data: []const u8,
     mac.final(dst[plaintext.len..]);
 }
 
-/// Verifies and decrypts an authenticated message produced by chacha20poly1305Open.
+/// Verifies and decrypts an authenticated message produced by chacha20poly1305Seal.
 pub fn chacha20poly1305Open(dst: []u8, ciphertext: []const u8, data: []const u8, key: [32]u8, nonce: [12]u8) !void {
     if (ciphertext.len < chacha20poly1305_tag_size) {
         return error.InvalidMessage;