diff --git a/relay32/builtin32.c b/relay32/builtin32.c
index 36bee629c1e..9f26d99514c 100644
--- a/relay32/builtin32.c
+++ b/relay32/builtin32.c
@@ -164,8 +164,9 @@ WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
     if (!(wm = MODULE_FindModule( path ))) wm = MODULE_FindModule( dllname );
     if (!wm)
     {
-        ERR( "loaded .so but dll %s still not found - library environment problem or version conflict, check your setup.\n", dllname );
+        ERR( "loaded .so but dll %s still not found - 16-bit dll or version conflict.\n", dllname );
         /* wine_dll_unload( handle );*/
+        SetLastError( ERROR_BAD_EXE_FORMAT );
         return NULL;
     }
     wm->dlhandle = handle;