diff --git a/direct/src/dcparser/dcAtomicField.h b/direct/src/dcparser/dcAtomicField.h
index 1175602694..d526bdf502 100644
--- a/direct/src/dcparser/dcAtomicField.h
+++ b/direct/src/dcparser/dcAtomicField.h
@@ -19,7 +19,7 @@
 //               Distributed Class, and is always implemented as a
 //               remote procedure method.
 ////////////////////////////////////////////////////////////////////
-class DCAtomicField : public DCField {
+class EXPCL_DIRECT DCAtomicField : public DCField {
 PUBLISHED:
   virtual DCAtomicField *as_atomic_field();
 
diff --git a/direct/src/dcparser/dcClass.h b/direct/src/dcparser/dcClass.h
index 624779a4e2..c80cdad4b5 100644
--- a/direct/src/dcparser/dcClass.h
+++ b/direct/src/dcparser/dcClass.h
@@ -17,7 +17,7 @@
 // Description : Defines a particular DistributedClass as read from an
 //               input .dc file.
 ////////////////////////////////////////////////////////////////////
-class DCClass {
+class EXPCL_DIRECT DCClass {
 PUBLISHED:
   int get_number() const;
   string get_name() const;
diff --git a/direct/src/dcparser/dcField.h b/direct/src/dcparser/dcField.h
index 4e4baba399..3039ae04dd 100644
--- a/direct/src/dcparser/dcField.h
+++ b/direct/src/dcparser/dcField.h
@@ -16,7 +16,7 @@ class DCMolecularField;
 // Description : A single field of a Distributed Class, either atomic
 //               or molecular.
 ////////////////////////////////////////////////////////////////////
-class DCField {
+class EXPCL_DIRECT DCField {
 PUBLISHED:
   int get_number() const;
   const string &get_name() const;
diff --git a/direct/src/dcparser/dcFile.h b/direct/src/dcparser/dcFile.h
index f5b4d36cfb..5cf3807a8b 100644
--- a/direct/src/dcparser/dcFile.h
+++ b/direct/src/dcparser/dcFile.h
@@ -17,7 +17,7 @@
 // Description : Represents the complete list of Distributed Class
 //               descriptions as read from a .dc file.
 ////////////////////////////////////////////////////////////////////
-class DCFile {
+class EXPCL_DIRECT DCFile {
 PUBLISHED:
   DCFile();
   ~DCFile();
diff --git a/direct/src/dcparser/dcMolecularField.h b/direct/src/dcparser/dcMolecularField.h
index e7152a227c..2368f5a839 100644
--- a/direct/src/dcparser/dcMolecularField.h
+++ b/direct/src/dcparser/dcMolecularField.h
@@ -20,7 +20,7 @@ class DCAtomicField;
 //               of two or more related atomic fields, that will often
 //               be treated as a unit.
 ////////////////////////////////////////////////////////////////////
-class DCMolecularField : public DCField {
+class EXPCL_DIRECT DCMolecularField : public DCField {
 PUBLISHED:
   virtual DCMolecularField *as_molecular_field();