diff --git a/modules/plugin/base/public/npruntime.h b/modules/plugin/base/public/npruntime.h
index e210b40ff50..14047c41fee 100644
--- a/modules/plugin/base/public/npruntime.h
+++ b/modules/plugin/base/public/npruntime.h
@@ -254,7 +254,7 @@ NPIdentifier NPN_GetStringIdentifier(const NPUTF8 *name);
 void NPN_GetStringIdentifiers(const NPUTF8 **names, int32_t nameCount,
                               NPIdentifier *identifiers);
 NPIdentifier NPN_GetIntIdentifier(int32_t intid);
-bool NPN_IdentifierIsString(NPIdentifier *identifier);
+bool NPN_IdentifierIsString(NPIdentifier identifier);
 
 /*
     The NPUTF8 returned from NPN_UTF8FromIdentifier SHOULD be freed.
diff --git a/modules/plugin/base/src/ns4xPlugin.cpp b/modules/plugin/base/src/ns4xPlugin.cpp
index 5820d83b8ae..7cc1ffd6d3d 100644
--- a/modules/plugin/base/src/ns4xPlugin.cpp
+++ b/modules/plugin/base/src/ns4xPlugin.cpp
@@ -338,6 +338,9 @@ ns4xPlugin::CheckClassInitialized(void)
   CALLBACKS.utf8fromidentifier =
     NewNPN_UTF8FromIdentifierProc(FP2TV(_utf8fromidentifier));
 
+  CALLBACKS.intfromidentifier =
+    NewNPN_IntFromIdentifierProc(FP2TV(_intfromidentifier));
+
   CALLBACKS.createobject =
     NewNPN_CreateObjectProc(FP2TV(_createobject));
 
@@ -362,6 +365,12 @@ ns4xPlugin::CheckClassInitialized(void)
   CALLBACKS.removeproperty =
     NewNPN_RemovePropertyProc(FP2TV(_removeproperty));
 
+  CALLBACKS.hasproperty =
+    NewNPN_HasPropertyProc(FP2TV(_hasproperty));
+
+  CALLBACKS.hasmethod =
+    NewNPN_HasMethodProc(FP2TV(_hasmethod));
+
   CALLBACKS.releasevariantvalue =
     NewNPN_ReleaseVariantValueProc(FP2TV(_releasevariantvalue));