diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp
index f3a91cbd5ef..ceaecd04103 100644
--- a/lib/MC/MCExpr.cpp
+++ b/lib/MC/MCExpr.cpp
@@ -357,6 +357,11 @@ static void AttemptToFoldSymbolOffsetDifference(const MCAssembler *Asm,
   if (Addrs && (&SecA != &SecB))
     Addend += (Addrs->lookup(&SecA) - Addrs->lookup(&SecB));
 
+  // Pointers to Thumb symbols need to have their low-bit set to allow
+  // for interworking.
+  if (Asm->isThumbFunc(&SA))
+    Addend |= 1;
+
   // Clear the symbol expr pointers to indicate we have folded these
   // operands.
   A = B = 0;