diff --git a/llvm/test/tools/llvm-objcopy/MachO/bitcode-strip.test b/llvm/test/tools/llvm-objcopy/MachO/bitcode-strip.test
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-objcopy/MachO/bitcode-strip.test
@@ -0,0 +1,68 @@
+## Test output flag is required
+
+# RUN: yaml2obj %s -o %t
+# RUN: not llvm-bitcode-strip %t
+# RUN: llvm-bitcode-strip %t -o %t2
+
+--- !mach-o
+FileHeader:
+  magic:           0xFEEDFACF
+  cputype:         0x01000007
+  cpusubtype:      0x00000003
+  filetype:        0x00000001
+  ncmds:           1
+  sizeofcmds:      312
+  flags:           0x00002000
+  reserved:        0x00000000
+LoadCommands:
+  - cmd:             LC_SEGMENT_64
+    cmdsize:         312
+    segname:         ''
+    vmaddr:          0
+    vmsize:          12
+    fileoff:         344
+    filesize:        12
+    maxprot:         7
+    initprot:        7
+    nsects:          3
+    flags:           0
+    Sections:
+      - sectname:        __text
+        segname:         __TEXT
+        addr:            0x0000000000000000
+        content:         'AABBCCDD'
+        size:            4
+        offset:          344
+        align:           0
+        reloff:          0x00000000
+        nreloc:          0
+        flags:           0x80000400
+        reserved1:       0x00000000
+        reserved2:       0x00000000
+        reserved3:       0x00000000
+      - sectname:        __data
+        segname:         __DATA
+        addr:            0x0000000000000004
+        content:         'DDAADDAA'
+        size:            4
+        offset:          348
+        align:           0
+        reloff:          0x00000000
+        nreloc:          0
+        flags:           0x00000000
+        reserved1:       0x00000000
+        reserved2:       0x00000000
+        reserved3:       0x00000000
+      - sectname:        __bundle
+        segname:         __LLVM
+        addr:            0x0000000000000008
+        content:         'EEFFEEFF'
+        size:            4
+        offset:          352
+        align:           0
+        reloff:          0x00000000
+        nreloc:          0
+        flags:           0x00000000
+        reserved1:       0x00000000
+        reserved2:       0x00000000
+        reserved3:       0x00000000
diff --git a/llvm/tools/llvm-objcopy/BitcodeStripOpts.td b/llvm/tools/llvm-objcopy/BitcodeStripOpts.td
--- a/llvm/tools/llvm-objcopy/BitcodeStripOpts.td
+++ b/llvm/tools/llvm-objcopy/BitcodeStripOpts.td
@@ -22,3 +22,6 @@
 def V : Flag<["-"], "V">,
         Alias<version>,
         HelpText<"Alias for --version">;
+
+def output : JoinedOrSeparate<["-"], "o">, HelpText<"Write output to <file>">,
+             MetaVarName<"<file>">;
diff --git a/llvm/tools/llvm-objcopy/ObjcopyOptions.cpp b/llvm/tools/llvm-objcopy/ObjcopyOptions.cpp
--- a/llvm/tools/llvm-objcopy/ObjcopyOptions.cpp
+++ b/llvm/tools/llvm-objcopy/ObjcopyOptions.cpp
@@ -1207,7 +1207,13 @@
                              "llvm-bitcode-strip expects a single input file");
   assert(!Positional.empty());
   Config.InputFilename = Positional[0];
-  Config.OutputFilename = Positional[0];
+
+  if (!InputArgs.hasArg(BITCODE_STRIP_output)) {
+    return createStringError(
+        errc::invalid_argument,
+        "llvm-bitcode-strip expects a single output path specified with -o");
+  }
+  Config.OutputFilename = InputArgs.getLastArgValue(BITCODE_STRIP_output);
 
   DC.CopyConfigs.push_back(std::move(ConfigMgr));
   return std::move(DC);