diff --git a/lib/Target/ARM/Thumb2SizeReduction.cpp b/lib/Target/ARM/Thumb2SizeReduction.cpp
index b3ed8e84f92..e6f45bb5ca9 100644
--- a/lib/Target/ARM/Thumb2SizeReduction.cpp
+++ b/lib/Target/ARM/Thumb2SizeReduction.cpp
@@ -654,8 +654,11 @@ bool Thumb2SizeReduce::ReduceMBB(MachineBasicBlock &MBB) {
       }
 
       // Try to transform ro a 16-bit non-two-address instruction.
-      if (Entry.NarrowOpc1 && ReduceToNarrow(MBB, MI, Entry, LiveCPSR))
+      if (Entry.NarrowOpc1 && ReduceToNarrow(MBB, MI, Entry, LiveCPSR)) {
         Modified = true;
+        MachineBasicBlock::iterator I = prior(NextMII);
+        MI = &*I;
+      }
     }
 
   ProcessNext: