diff --git a/panda/src/gobj/qpgeomMunger.h b/panda/src/gobj/qpgeomMunger.h
index bab2ec5021..d240774289 100644
--- a/panda/src/gobj/qpgeomMunger.h
+++ b/panda/src/gobj/qpgeomMunger.h
@@ -125,7 +125,7 @@ private:
 
   bool _is_registered;
   typedef pset<qpGeomMunger *, IndirectCompareTo<qpGeomMunger> > Mungers;
-  class Registry {
+  class EXPCL_PANDA Registry {
   public:
     Registry();
     CPT(qpGeomMunger) register_munger(qpGeomMunger *munger);
diff --git a/panda/src/gobj/qpgeomVertexFormat.h b/panda/src/gobj/qpgeomVertexFormat.h
index 3e77e16ec9..edc36369ed 100644
--- a/panda/src/gobj/qpgeomVertexFormat.h
+++ b/panda/src/gobj/qpgeomVertexFormat.h
@@ -151,7 +151,7 @@ private:
 
   // This is the global registry of all currently-in-use formats.
   typedef pset<qpGeomVertexFormat *, IndirectCompareTo<qpGeomVertexFormat> > Formats;
-  class Registry {
+  class EXPCL_PANDA Registry {
   public:
     Registry();
     CPT(qpGeomVertexFormat) register_format(qpGeomVertexFormat *format);