diff --git a/dlls/ole32/storage32.c b/dlls/ole32/storage32.c
index 9c71f85eaab..debdbbf3ccd 100644
--- a/dlls/ole32/storage32.c
+++ b/dlls/ole32/storage32.c
@@ -7609,11 +7609,21 @@ HRESULT WINAPI StgOpenStorage(
   HANDLE         hFile = 0;
   DWORD          shareMode;
   DWORD          accessMode;
+  LPWSTR         temp_name = NULL;
 
   TRACE("(%s, %p, %x, %p, %d, %p)\n",
 	debugstr_w(pwcsName), pstgPriority, grfMode,
 	snbExclude, reserved, ppstgOpen);
 
+  if (pstgPriority)
+  {
+    /* FIXME: Copy ILockBytes instead? But currently for STGM_PRIORITY it'll be read-only. */
+    hr = StorageBaseImpl_GetFilename((StorageBaseImpl*)pstgPriority, &temp_name);
+    if (FAILED(hr)) goto end;
+    pwcsName = temp_name;
+    TRACE("using filename %s\n", debugstr_w(temp_name));
+  }
+
   if (pwcsName == 0)
   {
     hr = STG_E_INVALIDNAME;
@@ -7775,6 +7785,8 @@ HRESULT WINAPI StgOpenStorage(
   *ppstgOpen = &newStorage->IStorage_iface;
 
 end:
+  CoTaskMemFree(temp_name);
+  if (pstgPriority) IStorage_Release(pstgPriority);
   TRACE("<-- %08x, IStorage %p\n", hr, ppstgOpen ? *ppstgOpen : NULL);
   return hr;
 }
diff --git a/dlls/ole32/tests/storage32.c b/dlls/ole32/tests/storage32.c
index b298f8d9da0..a14f19be6ee 100644
--- a/dlls/ole32/tests/storage32.c
+++ b/dlls/ole32/tests/storage32.c
@@ -929,7 +929,48 @@ static void test_storage_refcount(void)
         r = IStorage_Release(stg);
         ok(r == 0, "wrong ref count\n");
     }
-    IStorage_Release(stgprio);
+
+    /* Multiple STGM_PRIORITY opens are possible. */
+    r = StgOpenStorage( filename, NULL, STGM_PRIORITY, NULL, 0, &stg);
+    ok(r==S_OK, "StgOpenStorage failed with error 0x%08x\n", r);
+    if(stg)
+    {
+        r = IStorage_Release(stg);
+        ok(r == 0, "wrong ref count\n");
+    }
+
+    r = StgOpenStorage( NULL, stgprio, STGM_TRANSACTED|STGM_SHARE_DENY_WRITE|STGM_READWRITE, NULL, 0, &stg);
+    ok(r==S_OK, "StgOpenStorage failed with error 0x%08x\n", r);
+    if(stg)
+    {
+        static const WCHAR stgname[] = { ' ',' ',' ','2','9',0 };
+        IStorage *stg2;
+        STATSTG statstg;
+
+        r = IStorage_Stat( stg, &statstg, STATFLAG_NONAME );
+        ok(r == S_OK, "Stat should have succeeded instead of returning 0x%08x\n", r);
+        ok(statstg.type == STGTY_STORAGE, "Statstg type should have been STGTY_STORAGE instead of %d\n", statstg.type);
+        ok(U(statstg.cbSize).LowPart == 0, "Statstg cbSize.LowPart should have been 0 instead of %d\n", U(statstg.cbSize).LowPart);
+        ok(U(statstg.cbSize).HighPart == 0, "Statstg cbSize.HighPart should have been 0 instead of %d\n", U(statstg.cbSize).HighPart);
+        ok(statstg.grfMode == (STGM_TRANSACTED|STGM_SHARE_DENY_WRITE|STGM_READWRITE),
+            "Statstg grfMode should have been 0x10022 instead of 0x%x\n", statstg.grfMode);
+        ok(statstg.grfLocksSupported == 0, "Statstg grfLocksSupported should have been 0 instead of %d\n", statstg.grfLocksSupported);
+        ok(IsEqualCLSID(&statstg.clsid, &test_stg_cls), "Statstg clsid is not test_stg_cls\n");
+        ok(statstg.grfStateBits == 0, "Statstg grfStateBits should have been 0 instead of %d\n", statstg.grfStateBits);
+        ok(statstg.reserved == 0, "Statstg reserved should have been 0 instead of %d\n", statstg.reserved);
+
+        r = IStorage_CreateStorage( stg, stgname, STGM_SHARE_EXCLUSIVE, 0, 0, &stg2 );
+        ok(r == S_OK, "CreateStorage should have succeeded instead of returning 0x%08x\n", r);
+
+        IStorage_Release(stg2);
+
+        r = IStorage_Commit( stg, 0 );
+        ok(r == S_OK, "Commit should have succeeded instead of returning 0x%08x\n", r);
+
+        r = IStorage_Release(stg);
+        ok(r == 0, "wrong ref count\n");
+    }
+    /* IStorage_Release(stgprio) not necessary because StgOpenStorage released it. */
 
     DeleteFileA(filenameA);
 }