diff --git a/dlls/shdocvw/shdocvw.spec b/dlls/shdocvw/shdocvw.spec
index aa5ef512b3c..4a0dd2c678a 100644
--- a/dlls/shdocvw/shdocvw.spec
+++ b/dlls/shdocvw/shdocvw.spec
@@ -40,7 +40,7 @@
 151 stdcall -noname URLSubRegQueryA(str str long ptr long long)
 152 stub -noname CShellUIHelper_CreateInstance2
 153 stub -noname IsURLChild
-158 stub -noname SHRestricted2A
+158 stdcall -noname SHRestricted2A(long str long)
 159 stdcall -noname SHRestricted2W(long wstr long)
 160 stub -noname SHIsRestricted2W
 161 stub @ # CSearchAssistantOC::OnDraw
diff --git a/dlls/shdocvw/shdocvw_main.c b/dlls/shdocvw/shdocvw_main.c
index 746753f0ab2..5dfd2b99ddf 100644
--- a/dlls/shdocvw/shdocvw_main.c
+++ b/dlls/shdocvw/shdocvw_main.c
@@ -440,3 +440,24 @@ DWORD WINAPI SHRestricted2W(DWORD res, LPCWSTR url, DWORD reserved)
     FIXME("(%d %s %d) stub\n", res, debugstr_w(url), reserved);
     return 0;
 }
+
+/******************************************************************
+ * SHRestricted2A (SHDOCVW.158)
+ *
+ * See SHRestricted2W
+ */
+DWORD WINAPI SHRestricted2A(DWORD restriction, LPCSTR url, DWORD reserved)
+{
+    LPWSTR urlW = NULL;
+    DWORD res;
+
+    TRACE("(%d, %s, %d)\n", restriction, debugstr_a(url), reserved);
+    if (url) {
+        DWORD len = MultiByteToWideChar(CP_ACP, 0, url, -1, NULL, 0);
+        urlW = heap_alloc(len * sizeof(WCHAR));
+        MultiByteToWideChar(CP_ACP, 0, url, -1, urlW, len);
+    }
+    res = SHRestricted2W(restriction, urlW, reserved);
+    heap_free(urlW);
+    return res;
+}