diff --git a/relay32/builtin32.c b/relay32/builtin32.c
index bdfa707084eef10d31d26e949b36cb5d0327eb61..5d73107e5b789e2f6dce8fc7ceaf94122c18c3dd 100644
--- a/relay32/builtin32.c
+++ b/relay32/builtin32.c
@@ -87,6 +87,7 @@ extern const BUILTIN32_DESCRIPTOR TAPI32_Descriptor;
 extern const BUILTIN32_DESCRIPTOR USER32_Descriptor;
 extern const BUILTIN32_DESCRIPTOR VERSION_Descriptor;
 extern const BUILTIN32_DESCRIPTOR W32SKRNL_Descriptor;
+extern const BUILTIN32_DESCRIPTOR WINEOSS_Descriptor;
 extern const BUILTIN32_DESCRIPTOR WINMM_Descriptor;
 extern const BUILTIN32_DESCRIPTOR WINSPOOL_Descriptor;
 extern const BUILTIN32_DESCRIPTOR WNASPI32_Descriptor;
@@ -142,6 +143,7 @@ static BUILTIN32_DLL BuiltinDLLs[] =
     { &W32SKRNL_Descriptor, 0, 0, NULL },
     { &WINMM_Descriptor,    0, 0, &winmm_ResourceDescriptor },
     { &WINSPOOL_Descriptor, 0, 0, NULL },
+    { &WINEOSS_Descriptor,  0, 0, NULL },
     { &WNASPI32_Descriptor, 0, 0, NULL },
     { &WOW32_Descriptor,    0, 0, NULL },
     { &WSOCK32_Descriptor,  0, 0, NULL },