diff --git a/dlls/dinput/device.c b/dlls/dinput/device.c
index 43cd946a93e..86418039156 100644
--- a/dlls/dinput/device.c
+++ b/dlls/dinput/device.c
@@ -1339,7 +1339,7 @@ HRESULT WINAPI IDirectInputDevice8AImpl_BuildActionMap(LPDIRECTINPUTDEVICE8A ifa
 						       DWORD dwFlags)
 {
     FIXME("(%p)->(%p,%s,%08x): stub !\n", iface, lpdiaf, lpszUserName, dwFlags);
-    
+    _dump_diactionformatA(lpdiaf);
     return DI_OK;
 }
 
diff --git a/dlls/dinput/dinput_main.c b/dlls/dinput/dinput_main.c
index 2638710131c..0424f72e16f 100644
--- a/dlls/dinput/dinput_main.c
+++ b/dlls/dinput/dinput_main.c
@@ -82,7 +82,7 @@ static const struct dinput_device *dinput_devices[] =
 };
 #define NB_DINPUT_DEVICES (sizeof(dinput_devices)/sizeof(dinput_devices[0]))
 
-HINSTANCE DINPUT_instance = NULL;
+static HINSTANCE DINPUT_instance = NULL;
 
 BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserv)
 {
@@ -210,6 +210,35 @@ static void _dump_EnumDevices_dwFlags(DWORD dwFlags) {
     TRACE("\n");
 }
 
+void _dump_diactionformatA(LPDIACTIONFORMATA lpdiActionFormat) {
+    int i;
+
+    FIXME("diaf.dwSize = %d\n", lpdiActionFormat->dwSize);
+    FIXME("diaf.dwActionSize = %d\n", lpdiActionFormat->dwActionSize);
+    FIXME("diaf.dwDataSize = %d\n", lpdiActionFormat->dwDataSize);
+    FIXME("diaf.dwNumActions = %d\n", lpdiActionFormat->dwNumActions);
+    FIXME("diaf.rgoAction = %p\n", lpdiActionFormat->rgoAction);
+    for (i=0;i<lpdiActionFormat->dwNumActions;i++) {
+        FIXME("diaf.rgoAction[%d]:\n", i);
+        FIXME("\tuAppData=%lx\n", lpdiActionFormat->rgoAction[i].uAppData);
+        FIXME("\tdwSemantics=%x\n", lpdiActionFormat->rgoAction[i].dwSemantics);
+        FIXME("\tdwFlags=%x\n", lpdiActionFormat->rgoAction[i].dwFlags);
+        FIXME("\tszActionName=%s\n", debugstr_a(lpdiActionFormat->rgoAction[i].lptszActionName));
+        FIXME("\tguidInstance=%s\n", debugstr_guid(&lpdiActionFormat->rgoAction[i].guidInstance));
+        FIXME("\tdwObjID=%x\n", lpdiActionFormat->rgoAction[i].dwObjID);
+        FIXME("\tdwHow=%x\n", lpdiActionFormat->rgoAction[i].dwHow);
+    }
+    FIXME("diaf.guidActionMap = %s\n", debugstr_guid(&lpdiActionFormat->guidActionMap));
+    FIXME("diaf.dwGenre = %d\n", lpdiActionFormat->dwGenre);
+    FIXME("diaf.dwBufferSize = %d\n", lpdiActionFormat->dwBufferSize);
+    FIXME("diaf.lAxisMin = %d\n", lpdiActionFormat->lAxisMin);
+    FIXME("diaf.lAxisMax = %d\n", lpdiActionFormat->lAxisMax);
+    FIXME("diaf.hInstString = %p\n", lpdiActionFormat->hInstString);
+    FIXME("diaf.ftTimeStamp ...\n");
+    FIXME("diaf.dwCRC = %x\n", lpdiActionFormat->dwCRC);
+    FIXME("diaf.tszActionMap = %s\n", debugstr_a(lpdiActionFormat->tszActionMap));
+}
+
 /******************************************************************************
  *	IDirectInputA_EnumDevices
  */
diff --git a/dlls/dinput/dinput_private.h b/dlls/dinput/dinput_private.h
index a9d12de967b..15783e2bb28 100644
--- a/dlls/dinput/dinput_private.h
+++ b/dlls/dinput/dinput_private.h
@@ -59,9 +59,9 @@ extern const struct dinput_device keyboard_device;
 extern const struct dinput_device joystick_linux_device;
 extern const struct dinput_device joystick_linuxinput_device;
 
-extern HINSTANCE DINPUT_instance;
-
 extern void check_dinput_hooks(LPDIRECTINPUTDEVICE8A);
 typedef void (*DI_EVENT_PROC)(LPDIRECTINPUTDEVICE8A, WPARAM, LPARAM);
 
+extern void _dump_diactionformatA(LPDIACTIONFORMATA);
+
 #endif /* __WINE_DLLS_DINPUT_DINPUT_PRIVATE_H */