diff --git a/llvm/test/tools/llvm-objcopy/MachO/discard-all.test b/llvm/test/tools/llvm-objcopy/MachO/discard-all.test
--- a/llvm/test/tools/llvm-objcopy/MachO/discard-all.test
+++ b/llvm/test/tools/llvm-objcopy/MachO/discard-all.test
@@ -17,6 +17,10 @@
 # RUN: llvm-strip -x %t
 # RUN: cmp %t2 %t
 
+## FIXME: We should also check that we don't discard symbols that are referenced
+## by the indirect symbol table. However, yaml2obj currently lacks support for
+## the indirect symbol table.
+
 # CHECK:       Symbols [
 # CHECK-NEXT:    Symbol {
 # CHECK-NEXT:      Name: _b (1)
diff --git a/llvm/tools/llvm-objcopy/MachO/MachOObjcopy.cpp b/llvm/tools/llvm-objcopy/MachO/MachOObjcopy.cpp
--- a/llvm/tools/llvm-objcopy/MachO/MachOObjcopy.cpp
+++ b/llvm/tools/llvm-objcopy/MachO/MachOObjcopy.cpp
@@ -361,9 +361,7 @@
     return E;
 
   // Mark symbols to determine which symbols are still needed.
-  if (Config.StripAll)
-    markSymbols(Config, Obj);
-
+  markSymbols(Config, Obj);
   updateAndRemoveSymbols(Config, Obj);
 
   if (Config.StripAll)