diff --git a/dlls/dinput/device.c b/dlls/dinput/device.c
index dff1f3426d3..85392c6b30b 100644
--- a/dlls/dinput/device.c
+++ b/dlls/dinput/device.c
@@ -1357,7 +1357,7 @@ static HRESULT WINAPI dinput_device_CreateEffect( IDirectInputDevice8W *iface, c
                                                   IUnknown *outer )
 {
     struct dinput_device *impl = impl_from_IDirectInputDevice8W( iface );
-    DWORD flags = DIEP_ALLPARAMS;
+    DWORD flags;
     HRESULT hr;
 
     TRACE( "iface %p, guid %s, params %p, out %p, outer %p\n", iface, debugstr_guid( guid ),
@@ -1372,8 +1372,9 @@ static HRESULT WINAPI dinput_device_CreateEffect( IDirectInputDevice8W *iface, c
 
     hr = IDirectInputEffect_Initialize( *out, DINPUT_instance, impl->dinput->dwVersion, guid );
     if (FAILED(hr)) goto failed;
-
     if (!params) return DI_OK;
+
+    flags = params->dwSize == sizeof(DIEFFECT_DX6) ? DIEP_ALLPARAMS : DIEP_ALLPARAMS_DX5;
     if (!impl->acquired || !(impl->dwCoopLevel & DISCL_EXCLUSIVE)) flags |= DIEP_NODOWNLOAD;
     hr = IDirectInputEffect_SetParameters( *out, params, flags );
     if (FAILED(hr)) goto failed;
diff --git a/dlls/dinput/joystick_hid.c b/dlls/dinput/joystick_hid.c
index 610a75871f1..20a10bde6ae 100644
--- a/dlls/dinput/joystick_hid.c
+++ b/dlls/dinput/joystick_hid.c
@@ -2149,7 +2149,11 @@ static HRESULT WINAPI hid_joystick_effect_GetParameters( IDirectInputEffect *ifa
     if (flags & DIEP_DURATION) params->dwDuration = impl->params.dwDuration;
     if (flags & DIEP_GAIN) params->dwGain = impl->params.dwGain;
     if (flags & DIEP_SAMPLEPERIOD) params->dwSamplePeriod = impl->params.dwSamplePeriod;
-    if (flags & DIEP_STARTDELAY) params->dwStartDelay = impl->params.dwStartDelay;
+    if (flags & DIEP_STARTDELAY)
+    {
+        if (params->dwSize != sizeof(DIEFFECT_DX6)) return DIERR_INVALIDPARAM;
+        params->dwStartDelay = impl->params.dwStartDelay;
+    }
     if (flags & DIEP_TRIGGERREPEATINTERVAL) params->dwTriggerRepeatInterval = impl->params.dwTriggerRepeatInterval;
 
     if (flags & DIEP_TRIGGERBUTTON)
@@ -2336,6 +2340,7 @@ static HRESULT WINAPI hid_joystick_effect_SetParameters( IDirectInputEffect *ifa
     }
     if (flags & DIEP_STARTDELAY)
     {
+        if (params->dwSize != sizeof(DIEFFECT_DX6)) return DIERR_INVALIDPARAM;
         if (impl->params.dwStartDelay != params->dwStartDelay) impl->modified = TRUE;
         impl->params.dwStartDelay = params->dwStartDelay;
     }