diff --git a/wrap/ReturnValue.cpp b/wrap/ReturnValue.cpp
index 1405e8e2b..d857f4a93 100644
--- a/wrap/ReturnValue.cpp
+++ b/wrap/ReturnValue.cpp
@@ -68,4 +68,17 @@ void ReturnValue::emit_matlab(FileWriter& proxyFile) const {
 }
 
 /* ************************************************************************* */
+void ReturnValue::emit_cython_pxd(FileWriter& file) const {
+  string output;
+  if (isPair) {
+    file.oss << "pair[";
+    type1.emit_cython_pxd(file);
+    file.oss << ",";
+    type1.emit_cython_pxd(file);
+    "] ";
+  }
+  else type1.emit_cython_pxd(file);
+}
+
+/* ************************************************************************* */
 
diff --git a/wrap/ReturnValue.h b/wrap/ReturnValue.h
index 629684a34..5a6fe24ec 100644
--- a/wrap/ReturnValue.h
+++ b/wrap/ReturnValue.h
@@ -67,6 +67,8 @@ struct ReturnValue {
 
   void emit_matlab(FileWriter& proxyFile) const;
 
+  void emit_cython_pxd(FileWriter& file) const;
+
   friend std::ostream& operator<<(std::ostream& os, const ReturnValue& r) {
     if (!r.isPair && r.type1.category == ReturnType::VOID)
       os << "void";