diff --git a/lld/MachO/UnwindInfoSection.cpp b/lld/MachO/UnwindInfoSection.cpp
--- a/lld/MachO/UnwindInfoSection.cpp
+++ b/lld/MachO/UnwindInfoSection.cpp
@@ -168,9 +168,14 @@
     assert(target->hasAttr(r.type, RelocAttrBits::UNSIGNED));
 
     if (r.offset % sizeof(CompactUnwindEntry<Ptr>) == 0) {
-      if (auto *referentIsec = r.referent.dyn_cast<InputSection *>())
-        if (!cast<ConcatInputSection>(referentIsec)->shouldOmitFromOutput())
-          allEntriesAreOmitted = false;
+      InputSection *referentIsec;
+      if (auto *isec = r.referent.dyn_cast<InputSection *>())
+        referentIsec = isec;
+      else
+        referentIsec = cast<Defined>(r.referent.dyn_cast<Symbol *>())->isec;
+
+      if (!cast<ConcatInputSection>(referentIsec)->shouldOmitFromOutput())
+        allEntriesAreOmitted = false;
       continue;
     }