diff --git a/src/libsodium/crypto_pwhash/argon2/argon2-fill-block-ref.c b/src/libsodium/crypto_pwhash/argon2/argon2-fill-block-ref.c
index 567895d8..d93daee1 100644
--- a/src/libsodium/crypto_pwhash/argon2/argon2-fill-block-ref.c
+++ b/src/libsodium/crypto_pwhash/argon2/argon2-fill-block-ref.c
@@ -29,7 +29,7 @@ fill_block(const block *prev_block, const block *ref_block, block *next_block)
     copy_block(&blockR, ref_block);
     xor_block(&blockR, prev_block);
     copy_block(&block_tmp, &blockR);
-    /* Now blockR = ref_block + prev_block and bloc_tmp = ref_block + prev_block
+    /* Now blockR = ref_block + prev_block and block_tmp = ref_block + prev_block
        Apply Blake2 on columns of 64-bit words: (0,1,...,15), then
        (16,17,..31)... finally (112,113,...127) */
     for (i = 0; i < 8; ++i) {
@@ -70,7 +70,7 @@ fill_block_with_xor(const block *prev_block, const block *ref_block,
     copy_block(&block_tmp, &blockR);
     xor_block(&block_tmp,
               next_block); /* Saving the next block contents for XOR over */
-    /* Now blockR = ref_block + prev_block and bloc_tmp = ref_block + prev_block
+    /* Now blockR = ref_block + prev_block and block_tmp = ref_block + prev_block
      * + next_block */
     /* Apply Blake2 on columns of 64-bit words: (0,1,...,15) , then
        (16,17,..31)... finally (112,113,...127) */
diff --git a/src/libsodium/crypto_scalarmult/curve25519/sandy2x/curve25519_sandy2x.c b/src/libsodium/crypto_scalarmult/curve25519/sandy2x/curve25519_sandy2x.c
index d653b21f..a9a52c91 100644
--- a/src/libsodium/crypto_scalarmult/curve25519/sandy2x/curve25519_sandy2x.c
+++ b/src/libsodium/crypto_scalarmult/curve25519/sandy2x/curve25519_sandy2x.c
@@ -1,8 +1,8 @@
 /*
    This file is adapted from ref10/scalarmult.c:
-   The code for Mongomery ladder is replace by the ladder assembly function;
+   The code for Montgomery ladder is replaced by the ladder assembly function;
    Inversion is done in the same way as amd64-51/.
-   (fe is first converted into fe51 after Mongomery ladder)
+   (fe is first converted into fe51 after Montgomery ladder)
 */
 
 #include <stddef.h>
diff --git a/src/libsodium/crypto_scalarmult/curve25519/scalarmult_curve25519.h b/src/libsodium/crypto_scalarmult/curve25519/scalarmult_curve25519.h
index 66edbf6a..0ae1cf2f 100644
--- a/src/libsodium/crypto_scalarmult/curve25519/scalarmult_curve25519.h
+++ b/src/libsodium/crypto_scalarmult/curve25519/scalarmult_curve25519.h
@@ -1,6 +1,6 @@
 
-#ifndef scalarmult_poly1305_H
-#define scalarmult_poly1305_H
+#ifndef scalarmult_curve25519_H
+#define scalarmult_curve25519_H
 
 typedef struct crypto_scalarmult_curve25519_implementation {
     int (*mult)(unsigned char *q, const unsigned char *n,
diff --git a/src/libsodium/include/sodium/crypto_hash_sha256.h b/src/libsodium/include/sodium/crypto_hash_sha256.h
index c47982af..f8311b2e 100644
--- a/src/libsodium/include/sodium/crypto_hash_sha256.h
+++ b/src/libsodium/include/sodium/crypto_hash_sha256.h
@@ -2,7 +2,7 @@
 #define crypto_hash_sha256_H
 
 /*
- * WARNING: Unless you absolutely need to use SHA256 for interoperability,
+ * WARNING: Unless you absolutely need to use SHA256 for interoperability
  * purposes, you might want to consider crypto_generichash() instead.
  * Unlike SHA256, crypto_generichash() is not vulnerable to length
  * extension attacks.
diff --git a/src/libsodium/include/sodium/crypto_hash_sha512.h b/src/libsodium/include/sodium/crypto_hash_sha512.h
index 5b690fb2..1628901c 100644
--- a/src/libsodium/include/sodium/crypto_hash_sha512.h
+++ b/src/libsodium/include/sodium/crypto_hash_sha512.h
@@ -2,7 +2,7 @@
 #define crypto_hash_sha512_H
 
 /*
- * WARNING: Unless you absolutely need to use SHA512 for interoperability,
+ * WARNING: Unless you absolutely need to use SHA512 for interoperability
  * purposes, you might want to consider crypto_generichash() instead.
  * Unlike SHA512, crypto_generichash() is not vulnerable to length
  * extension attacks.