diff --git a/MdePkg/Include/IndustryStandard/Http11.h b/MdePkg/Include/IndustryStandard/Http11.h
index 890bb6913b..220fba0bc4 100644
--- a/MdePkg/Include/IndustryStandard/Http11.h
+++ b/MdePkg/Include/IndustryStandard/Http11.h
@@ -147,10 +147,10 @@
 ///
 #define HTTP_HEADER_TRANSFER_ENCODING  "Transfer-Encoding"
 #define HTTP_HEADER_TRANSFER_ENCODING_CHUNKED "chunked"
-#define CHUNKED_TRNASFER_CODING_CR '\r'
-#define CHUNKED_TRNASFER_CODING_LF '\n'
-#define CHUNKED_TRNASFER_CODING_LAST_CHUNK '0'
-#define CHUNKED_TRNASFER_CODING_EXTENSION_SAPERATOR ';'
+#define CHUNKED_TRANSFER_CODING_CR '\r'
+#define CHUNKED_TRANSFER_CODING_LF '\n'
+#define CHUNKED_TRANSFER_CODING_LAST_CHUNK '0'
+#define CHUNKED_TRANSFER_CODING_EXTENSION_SEPARATOR ';'
 
 ///
 /// User Agent Request Header