diff --git a/sdk/include/ndk/iotypes.h b/sdk/include/ndk/iotypes.h
index 2faf128ee97..36914d364a3 100644
--- a/sdk/include/ndk/iotypes.h
+++ b/sdk/include/ndk/iotypes.h
@@ -1010,7 +1010,7 @@ typedef struct _EFI_DRIVER_ENTRY
 #ifdef NTOS_MODE_USER
 
 //
-// APC Callback for NtCreateFile
+// APC Callback for NtReadFile, NtWriteFile
 //
 typedef VOID
 (NTAPI *PIO_APC_ROUTINE)(
diff --git a/sdk/lib/rtl/unicodeprefix.c b/sdk/lib/rtl/unicodeprefix.c
index 61587d64b47..f595f800f1b 100644
--- a/sdk/lib/rtl/unicodeprefix.c
+++ b/sdk/lib/rtl/unicodeprefix.c
@@ -512,7 +512,7 @@ RtlNextUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable,
                                       UNICODE_PREFIX_TABLE_ENTRY,
                                       Links);
 
-            /* Get its tree and make sure somethign is in it */
+            /* Get its tree and make sure something is in it */
             Entry = Entry->NextPrefixTree;
             if (Entry->NameLength <= 0) return NULL;