diff --git a/lib/crypto_backend/argon2/core.c b/lib/crypto_backend/argon2/core.c
index 0aced16a..87818524 100644
--- a/lib/crypto_backend/argon2/core.c
+++ b/lib/crypto_backend/argon2/core.c
@@ -25,7 +25,6 @@
 #endif
 #define VC_GE_2005(version) (version >= 1400)
 
-#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/lib/crypto_backend/argon2/core.h b/lib/crypto_backend/argon2/core.h
index d1070ea0..78000ba9 100644
--- a/lib/crypto_backend/argon2/core.h
+++ b/lib/crypto_backend/argon2/core.h
@@ -30,6 +30,7 @@ enum argon2_core_constants {
     ARGON2_QWORDS_IN_BLOCK = ARGON2_BLOCK_SIZE / 8,
     ARGON2_OWORDS_IN_BLOCK = ARGON2_BLOCK_SIZE / 16,
     ARGON2_HWORDS_IN_BLOCK = ARGON2_BLOCK_SIZE / 32,
+    ARGON2_512BIT_WORDS_IN_BLOCK = ARGON2_BLOCK_SIZE / 64,
 
     /* Number of pseudo-random values generated by one call to Blake in Argon2i
        to
diff --git a/lib/crypto_backend/argon2/thread.h b/lib/crypto_backend/argon2/thread.h
index 3aa4d783..49d88367 100644
--- a/lib/crypto_backend/argon2/thread.h
+++ b/lib/crypto_backend/argon2/thread.h
@@ -46,7 +46,7 @@ typedef pthread_t argon2_thread_handle_t;
  * @param func A function pointer for the thread's entry point. Must not be
  * NULL.
  * @param args Pointer that is passed as an argument to @func. May be NULL.
- * @return 0 if @handle and @func are valid pointers and a thread is successfuly
+ * @return 0 if @handle and @func are valid pointers and a thread is successfully
  * created.
  */
 int argon2_thread_create(argon2_thread_handle_t *handle,