diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index ed94849e79..63b2dc864d 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -2596,7 +2596,7 @@ build
   <li>
     <code>CONFIG_PAGING_M25PX</code>:
     Use the m25px.c FLASH driver.
-	If this is selected, then the MTD interface to the MP25x device will be used to support paging.
+	If this is selected, then the MTD interface to the M25Px device will be used to support paging.
   </li>
   <li>
     <code>CONFIG_PAGING_M25PX_BINOFFSET</code>: