diff --git a/src/mame/drivers/popper.cpp b/src/mame/drivers/popper.cpp
index 82856fe068f..bea2721ca4a 100644
--- a/src/mame/drivers/popper.cpp
+++ b/src/mame/drivers/popper.cpp
@@ -42,6 +42,8 @@
 #include "cpu/z80/z80.h"
 #include "sound/ay8910.h"
 #include "video/resnet.h"
+#include "screen.h"
+#include "speaker.h"
 
 
 //**************************************************************************