diff --git a/src/util/rc/util_rc_ptr.h b/src/util/rc/util_rc_ptr.h
index afd901d2..23c5c43d 100644
--- a/src/util/rc/util_rc_ptr.h
+++ b/src/util/rc/util_rc_ptr.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <functional>
+#include <ostream>
 
 namespace dxvk {
   
@@ -120,4 +121,4 @@ namespace dxvk {
 template<typename T>
 std::ostream& operator << (std::ostream& os, const dxvk::Rc<T>& rc) {
   return os << rc.ptr();
-}
\ No newline at end of file
+}