diff --git a/graphics/d3ddevices.c b/graphics/d3ddevices.c
index e78474dbd28..b74ffef363c 100644
--- a/graphics/d3ddevices.c
+++ b/graphics/d3ddevices.c
@@ -13,6 +13,7 @@
 #include "ddraw.h"
 #include "d3d.h"
 #include "debug.h"
+#include "objbase.h"
 
 #include "d3d_private.h"
 
diff --git a/graphics/d3dexecutebuffer.c b/graphics/d3dexecutebuffer.c
index 7334522fac4..87ebbb61116 100644
--- a/graphics/d3dexecutebuffer.c
+++ b/graphics/d3dexecutebuffer.c
@@ -13,6 +13,7 @@
 #include "ddraw.h"
 #include "d3d.h"
 #include "debug.h"
+#include "objbase.h"
 
 #include "d3d_private.h"
 
diff --git a/graphics/d3dlight.c b/graphics/d3dlight.c
index b2c37023c3e..94a6378b7e3 100644
--- a/graphics/d3dlight.c
+++ b/graphics/d3dlight.c
@@ -13,6 +13,7 @@
 #include "ddraw.h"
 #include "d3d.h"
 #include "debug.h"
+#include "objbase.h"
 
 #include "d3d_private.h"
 
diff --git a/graphics/d3dmaterial.c b/graphics/d3dmaterial.c
index 649181e732d..17727159b39 100644
--- a/graphics/d3dmaterial.c
+++ b/graphics/d3dmaterial.c
@@ -12,6 +12,7 @@
 #include "ddraw.h"
 #include "d3d.h"
 #include "debug.h"
+#include "objbase.h"
 
 #include "d3d_private.h"
 
diff --git a/graphics/d3dtexture.c b/graphics/d3dtexture.c
index 038eb9ee4a3..46d7d377b58 100644
--- a/graphics/d3dtexture.c
+++ b/graphics/d3dtexture.c
@@ -13,6 +13,7 @@
 #include "ddraw.h"
 #include "d3d.h"
 #include "debug.h"
+#include "objbase.h"
 
 #include "d3d_private.h"
 
diff --git a/graphics/d3dviewport.c b/graphics/d3dviewport.c
index f1a95dc614c..654773d41f7 100644
--- a/graphics/d3dviewport.c
+++ b/graphics/d3dviewport.c
@@ -12,6 +12,7 @@
 #include "ddraw.h"
 #include "d3d.h"
 #include "debug.h"
+#include "objbase.h"
 
 #include "d3d_private.h"