diff --git a/docs/getting_started/porting-guide.rst b/docs/getting_started/porting-guide.rst
index 24af13e..be04b97 100644
--- a/docs/getting_started/porting-guide.rst
+++ b/docs/getting_started/porting-guide.rst
@@ -889,7 +889,7 @@
 
 ::
 
-    Argument : struct fwu_metadata *metadata
+    Argument : const struct fwu_metadata *metadata
     Return   : void
 
 This function is mandatory when PSA_FWU_SUPPORT is enabled.