diff --git a/Source/libgnustep-base.def.in b/Source/libgnustep-base.def.in
index cf999fe4b..37638bbac 100644
--- a/Source/libgnustep-base.def.in
+++ b/Source/libgnustep-base.def.in
@@ -162,7 +162,6 @@ __objc_class_name_NSLongNumber
 __objc_class_name_NSULongNumber
 __objc_class_name_NSLongLongNumber
 __objc_class_name_NSNumberFormatter
-__objc_class_name__FastMallocBuffer
 __objc_class_name_NSObject
 __objc_class_name_NSZombie
 __objc_class_name_NSPipe