diff --git a/NetworkPkg/DnsDxe/DnsImpl.c b/NetworkPkg/DnsDxe/DnsImpl.c
index 823bcf3792..71daccea80 100644
--- a/NetworkPkg/DnsDxe/DnsImpl.c
+++ b/NetworkPkg/DnsDxe/DnsImpl.c
@@ -1026,7 +1026,7 @@ AddDns6ServerIp (
   @return           QName filled successfully.
   
 **/ 
-UINT8 *
+CHAR8 *
 EFIAPI
 DnsFillinQNameForQueryIp (
   IN  CHAR16              *HostName
diff --git a/NetworkPkg/DnsDxe/DnsImpl.h b/NetworkPkg/DnsDxe/DnsImpl.h
index a13355f855..847cd15973 100644
--- a/NetworkPkg/DnsDxe/DnsImpl.h
+++ b/NetworkPkg/DnsDxe/DnsImpl.h
@@ -581,7 +581,7 @@ AddDns6ServerIp (
   @return           QName filled successfully.
   
 **/ 
-UINT8 *
+CHAR8 *
 EFIAPI
 DnsFillinQNameForQueryIp (
   IN  CHAR16              *HostName