diff --git a/Source/MediaInfo/Export/Export_Graph.cpp b/Source/MediaInfo/Export/Export_Graph.cpp
index 01fe30aa8..1145ccebf 100644
--- a/Source/MediaInfo/Export/Export_Graph.cpp
+++ b/Source/MediaInfo/Export/Export_Graph.cpp
@@ -130,7 +130,7 @@ Ztring Dot2Svg(const Ztring& Dot)
         return ToReturn;
 
     int Renderers_Size=0;
-    char** Renderers=gvPluginList(Context, "render", &Renderers_Size, NULL);
+    char** Renderers=gvPluginList(Context, "render", &Renderers_Size);
     for (int Pos=0; Pos<Renderers_Size; Pos++) {
         if (!strcmp(Renderers[Pos], "cairo"))
             Cairo=true;
diff --git a/Source/MediaInfo/Export/Export_Graph_gvc_Include.h b/Source/MediaInfo/Export/Export_Graph_gvc_Include.h
index 576100f85..87ce0e41b 100644
--- a/Source/MediaInfo/Export/Export_Graph_gvc_Include.h
+++ b/Source/MediaInfo/Export/Export_Graph_gvc_Include.h
@@ -107,7 +107,7 @@ extern "C"
 // Interface
 typedef GVC_t* (*gvc_Module_gvContext)(); static gvc_Module_gvContext gvContext=NULL;
 typedef int (*gvc_Module_gvFreeContext)(GVC_t*); static gvc_Module_gvFreeContext gvFreeContext=NULL;
-typedef char** (*gvc_Module_gvPluginList)(GVC_t*, const char*, int*, const char*); static gvc_Module_gvPluginList gvPluginList=NULL;
+typedef char** (*gvc_Module_gvPluginList)(GVC_t*, const char*, int*); static gvc_Module_gvPluginList gvPluginList=NULL;
 typedef int (*gvc_Module_gvLayout)(GVC_t*, graph_t*, const char*); static gvc_Module_gvLayout gvLayout=NULL;
 typedef int (*gvc_Module_gvFreeLayout)(GVC_t*, graph_t*); static gvc_Module_gvFreeLayout gvFreeLayout=NULL;
 typedef int (*gvc_Module_gvRenderData)(GVC_t*, graph_t*, const char*, char**, unsigned int*); static gvc_Module_gvRenderData gvRenderData=NULL;