diff --git a/dlls/apphelp/apphelp.c b/dlls/apphelp/apphelp.c
index a7884b1bfda..dd120a9a386 100644
--- a/dlls/apphelp/apphelp.c
+++ b/dlls/apphelp/apphelp.c
@@ -83,10 +83,16 @@ BOOL WINAPI ShimFlushCache( HWND hwnd, HINSTANCE instance, LPCSTR cmdline, int c
     return TRUE;
 }
 
-
 HSDB WINAPI SdbInitDatabase(DWORD flags, LPCWSTR path)
 {
     FIXME("stub: %08x %s\n", flags, debugstr_w(path));
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
     return NULL;
 }
+
+PDB WINAPI SdbOpenDatabase(LPCWSTR path, PATH_TYPE type)
+{
+    FIXME("stub: %s %08x\n", debugstr_w(path), type);
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return NULL;
+}
diff --git a/dlls/apphelp/apphelp.spec b/dlls/apphelp/apphelp.spec
index 06cabc52455..d94c5fa9add 100644
--- a/dlls/apphelp/apphelp.spec
+++ b/dlls/apphelp/apphelp.spec
@@ -96,7 +96,7 @@
 @ stub SdbOpenApphelpInformation
 @ stub SdbOpenApphelpInformationByID
 @ stub SdbOpenApphelpResourceFile
-@ stub SdbOpenDatabase
+@ stdcall SdbOpenDatabase(wstr long)
 @ stub SdbOpenDbFromGuid
 @ stub SdbOpenLocalDatabase
 @ stub SdbPackAppCompatData