diff --git a/dlls/riched20/tests/txtsrv.c b/dlls/riched20/tests/txtsrv.c
index a8cb169..474b0b1 100644
--- a/dlls/riched20/tests/txtsrv.c
+++ b/dlls/riched20/tests/txtsrv.c
@@ -441,7 +441,9 @@ static HRESULT WINAPI ITextHostImpl_TxGetSelectionBarWidth(ITextHost *iface,
     return E_NOTIMPL;
 }
 
+#ifdef __i386__
 static ITextServicesVtbl itextServicesStdcallVtbl;
+#endif
 
 static ITextHostVtbl itextHostVtbl = {
     ITextHostImpl_QueryInterface,