diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 318a8ad0fbc..fc6042e7f3c 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,7 @@
+2020-07-01  Alan Modra  <amodra@gmail.com>
+
+	* elf32-i386.c (elf_backend_object_p): Undef for vxworks.
+
 2020-07-01  Alan Modra  <amodra@gmail.com>
 
 	* config.bfd: Obsolete xc16x.
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 9045340cc12..9cd2fc5a937 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -4576,6 +4576,7 @@ elf32_iamcu_elf_object_p (bfd *abfd)
 #define ELF_ARCH			bfd_arch_i386
 #undef	ELF_MACHINE_CODE
 #define ELF_MACHINE_CODE		EM_386
+#undef	elf_backend_object_p
 
 /* VxWorks support.  */