diff --git a/dlls/oledb32/convert.c b/dlls/oledb32/convert.c
index 9d418600fd6..09614644151 100644
--- a/dlls/oledb32/convert.c
+++ b/dlls/oledb32/convert.c
@@ -480,8 +480,34 @@ static HRESULT WINAPI convert_DataConvert(IDataConvert* iface,
         DBTIMESTAMP *d=dst;
         switch (src_type)
         {
-	case DBTYPE_EMPTY:       memset(d, 0, sizeof(DBTIMESTAMP));    hr = S_OK; break;
-	case DBTYPE_DBTIMESTAMP: memcpy(d, src, sizeof(DBTIMESTAMP));  hr = S_OK; break;
+        case DBTYPE_EMPTY:       memset(d, 0, sizeof(DBTIMESTAMP));    hr = S_OK; break;
+        case DBTYPE_DBTIMESTAMP: memcpy(d, src, sizeof(DBTIMESTAMP));  hr = S_OK; break;
+        case DBTYPE_BSTR:
+        {
+            VARIANT var;
+            BSTR s = *(WCHAR**)src;
+
+            VariantInit(&var);
+            V_VT(&var) = VT_BSTR;
+            V_BSTR(&var) = SysAllocString(s);
+
+            if ((hr = VariantChangeType(&var, &var, 0, VT_DATE)) == S_OK)
+            {
+                SYSTEMTIME st;
+
+                hr = (VariantTimeToSystemTime( V_DATE(&var), &st) ? S_OK : E_FAIL);
+                d->year = st.wYear;
+                d->month = st.wMonth;
+                d->day = st.wDay;
+                d->hour = st.wHour;
+                d->minute = st.wMinute;
+                d->second = st.wSecond;
+                d->fraction = st.wMilliseconds * 1000000;
+            }
+
+            VariantClear(&var);
+        }
+        break;
         case DBTYPE_DATE:
         {
             SYSTEMTIME st;
diff --git a/dlls/oledb32/tests/convert.c b/dlls/oledb32/tests/convert.c
index ee2a39b0c76..fd69fed896c 100644
--- a/dlls/oledb32/tests/convert.c
+++ b/dlls/oledb32/tests/convert.c
@@ -2666,12 +2666,14 @@ static void test_converttovar(void)
 
 static void test_converttotimestamp(void)
 {
+    static const WCHAR strW[] = {'2','0','1','3','-','0','5','-','1','4',' ','0','2',':','0','4',':','1','2',0};
     DBTIMESTAMP ts = {2013, 5, 14, 2, 4, 12, 0};
     DBTIMESTAMP dst;
     DBSTATUS dst_status;
     DBLENGTH dst_len;
     VARIANT var;
     HRESULT hr;
+    BSTR bstr;
 
     VariantInit(&var);
     V_VT(&var) = VT_DATE;
@@ -2682,6 +2684,15 @@ static void test_converttotimestamp(void)
     ok(dst_status == DBSTATUS_S_OK, "got %08x\n", dst_status);
     ok(dst_len == sizeof(dst), "got %ld\n", dst_len);
     ok(!memcmp(&ts, &dst, sizeof(ts)), "Wrong timestamp\n");
+
+    bstr = SysAllocString(strW);
+    dst_len = 0x1234;
+    hr = IDataConvert_DataConvert(convert, DBTYPE_BSTR, DBTYPE_DBTIMESTAMP, 0, &dst_len, &bstr, &dst, sizeof(dst), 0, &dst_status, 0, 0, 0);
+    ok(hr == S_OK, "got %08x\n", hr);
+    ok(dst_status == DBSTATUS_S_OK, "got %08x\n", dst_status);
+    ok(dst_len == sizeof(dst), "got %ld\n", dst_len);
+    ok(!memcmp(&ts, &dst, sizeof(ts)), "Wrong timestamp\n");
+    SysFreeString(bstr);
 }
 
 START_TEST(convert)