diff --git a/lld/COFF/ICF.cpp b/lld/COFF/ICF.cpp
index 84709de2a6f0..88e67443c26b 100644
--- a/lld/COFF/ICF.cpp
+++ b/lld/COFF/ICF.cpp
@@ -271,7 +271,7 @@ void ICF::run(ArrayRef<Chunk *> Vec) {
     uint32_t Hash = SC->Class[1];
     for (Symbol *B : SC->symbols())
       if (auto *Sym = dyn_cast_or_null<DefinedRegular>(B))
-        Hash ^= Sym->getChunk()->Class[1];
+        Hash += Sym->getChunk()->Class[1];
     // Set MSB to 1 to avoid collisions with non-hash classs.
     SC->Class[0] = Hash | (1U << 31);
   });
diff --git a/lld/ELF/ICF.cpp b/lld/ELF/ICF.cpp
index 14dbd4e122c8..3f326fa337b7 100644
--- a/lld/ELF/ICF.cpp
+++ b/lld/ELF/ICF.cpp
@@ -431,7 +431,7 @@ static void combineRelocHashes(InputSection *IS, ArrayRef<RelTy> Rels) {
     Symbol &S = IS->template getFile<ELFT>()->getRelocTargetSym(Rel);
     if (auto *D = dyn_cast<Defined>(&S))
       if (auto *RelSec = dyn_cast_or_null<InputSection>(D->Section))
-        Hash ^= RelSec->Class[1];
+        Hash += RelSec->Class[1];
   }
   // Set MSB to 1 to avoid collisions with non-hash IDs.
   IS->Class[0] = Hash | (1U << 31);