diff --git a/MdePkg/Include/Library/UefiLib.h b/MdePkg/Include/Library/UefiLib.h
index 354cf3192c..5670b2a39f 100644
--- a/MdePkg/Include/Library/UefiLib.h
+++ b/MdePkg/Include/Library/UefiLib.h
@@ -138,15 +138,17 @@ EfiGetSystemConfigurationTable (
   instances specified by ProtocolGuid.
 
   This function causes the notification function to be executed for every protocol of type
-  ProtocolGuid instance that exists in the system when this function is invoked.
-  In addition, every time a protocol of type ProtocolGuid instance is installed or reinstalled,
-  the notification function is also executed.  This function returns the notification event
-  that was created. 
+  ProtocolGuid instance that exists in the system when this function is invoked. If there are
+  no instances of ProtocolGuid in the handle database at the time this function is invoked,
+  then the notification function is still executed one time. In addition, every time a protocol
+  of type ProtocolGuid instance is installed or reinstalled, the notification function is also
+  executed. This function returns the notification event that was created. 
   If ProtocolGuid is NULL, then ASSERT().
   If NotifyTpl is not a legal TPL value, then ASSERT().
   If NotifyFunction is NULL, then ASSERT().
   If Registration is NULL, then ASSERT().
 
+
   @param  ProtocolGuid    Supplies GUID of the protocol upon whose installation the event is fired.
   @param  NotifyTpl       Supplies the task priority level of the event notifications.
   @param  NotifyFunction  Supplies the function to notify when the event is signaled.
diff --git a/MdePkg/Library/UefiLib/UefiLib.c b/MdePkg/Library/UefiLib/UefiLib.c
index e515c12357..c0b4faa32c 100644
--- a/MdePkg/Library/UefiLib/UefiLib.c
+++ b/MdePkg/Library/UefiLib/UefiLib.c
@@ -92,15 +92,17 @@ EfiGetSystemConfigurationTable (
   instances specified by ProtocolGuid.
 
   This function causes the notification function to be executed for every protocol of type
-  ProtocolGuid instance that exists in the system when this function is invoked.
-  In addition, every time a protocol of type ProtocolGuid instance is installed or reinstalled,
-  the notification function is also executed.  This function returns the notification event
-  that was created. 
+  ProtocolGuid instance that exists in the system when this function is invoked. If there are
+  no instances of ProtocolGuid in the handle database at the time this function is invoked,
+  then the notification function is still executed one time. In addition, every time a protocol
+  of type ProtocolGuid instance is installed or reinstalled, the notification function is also
+  executed. This function returns the notification event that was created. 
   If ProtocolGuid is NULL, then ASSERT().
   If NotifyTpl is not a legal TPL value, then ASSERT().
   If NotifyFunction is NULL, then ASSERT().
   If Registration is NULL, then ASSERT().
 
+
   @param  ProtocolGuid    Supplies GUID of the protocol upon whose installation the event is fired.
   @param  NotifyTpl       Supplies the task priority level of the event notifications.
   @param  NotifyFunction  Supplies the function to notify when the event is signaled.