diff --git a/llvm/include/llvm/MC/MCELFObjectWriter.h b/llvm/include/llvm/MC/MCELFObjectWriter.h
index 12237094ad86a..d7c223cdcc07f 100644
--- a/llvm/include/llvm/MC/MCELFObjectWriter.h
+++ b/llvm/include/llvm/MC/MCELFObjectWriter.h
@@ -78,8 +78,6 @@ class MCELFObjectTargetWriter : public MCObjectTargetWriter {
         return ELF::ELFOSABI_FREEBSD;
       case Triple::Solaris:
         return ELF::ELFOSABI_SOLARIS;
-      case Triple::OpenBSD:
-        return ELF::ELFOSABI_OPENBSD;
       default:
         return ELF::ELFOSABI_NONE;
     }
diff --git a/llvm/test/MC/ELF/osabi.s b/llvm/test/MC/ELF/osabi.s
index 44912f4987c11..dc6ad2a349d75 100644
--- a/llvm/test/MC/ELF/osabi.s
+++ b/llvm/test/MC/ELF/osabi.s
@@ -10,7 +10,3 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-freebsd %s | llvm-readobj -h - | \
 # RUN:   FileCheck %s --check-prefix=FREEBSD
 # FREEBSD: OS/ABI: FreeBSD
-
-# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-openbsd %s | llvm-readobj -h - | \
-# RUN:   FileCheck %s --check-prefix=OPENBSD
-# OPENBSD: OS/ABI: OpenBSD