diff --git a/library/pkcs5.c b/library/pkcs5.c
index 03098f1..7a209dd 100644
--- a/library/pkcs5.c
+++ b/library/pkcs5.c
@@ -127,7 +127,7 @@
     size_t output_len = 0;
 
     /* We assume caller of the function is providing a big enough output buffer
-     * so we pass output_size as SIZE_MAX to pass checks, However, no gurantees
+     * so we pass output_size as SIZE_MAX to pass checks, However, no guarantees
      * for the output size actually being correct.
      */
     return mbedtls_pkcs5_pbes2_ext(pbe_params, mode, pwd, pwdlen, data,