diff --git a/dlls/apphelp/apphelp.c b/dlls/apphelp/apphelp.c
index 67c2139e031..64dcd877c31 100644
--- a/dlls/apphelp/apphelp.c
+++ b/dlls/apphelp/apphelp.c
@@ -106,3 +106,8 @@ TAGID WINAPI SdbGetFirstChild(PDB pdb, TAGID parent)
     FIXME("stub: %p %d\n", pdb, parent);
     return TAGID_NULL;
 }
+
+void WINAPI SdbCloseDatabase(PDB pdb)
+{
+    FIXME("stub: %p\n", pdb);
+}
diff --git a/dlls/apphelp/apphelp.spec b/dlls/apphelp/apphelp.spec
index e826abaee1f..a658e5cbf04 100644
--- a/dlls/apphelp/apphelp.spec
+++ b/dlls/apphelp/apphelp.spec
@@ -22,7 +22,7 @@
 @ stub SdbApphelpNotifyExSdbApphelpNotifyEx
 @ stub SdbBuildCompatEnvVariables
 @ stub SdbCloseApphelpInformation
-@ stub SdbCloseDatabase
+@ stdcall SdbCloseDatabase(ptr)
 @ stub SdbCloseDatabaseWrite
 @ stub SdbCloseLocalDatabase
 @ stub SdbCommitIndexes