diff --git a/llvm/lib/Target/M68k/MCTargetDesc/M68kAsmBackend.cpp b/llvm/lib/Target/M68k/MCTargetDesc/M68kAsmBackend.cpp
index f15d0d18edaa..8a0f32b58da4 100644
--- a/llvm/lib/Target/M68k/MCTargetDesc/M68kAsmBackend.cpp
+++ b/llvm/lib/Target/M68k/MCTargetDesc/M68kAsmBackend.cpp
@@ -134,11 +134,8 @@ static unsigned getRelaxedOpcodeBranch(const MCInst &Inst) {
 
 static unsigned getRelaxedOpcodeArith(const MCInst &Inst) {
   unsigned Op = Inst.getOpcode();
-  switch (Op) {
-  default:
-    return Op;
-    // NOTE there will be some relaxations for PCD and ARD mem for x20
-  }
+  // NOTE there will be some relaxations for PCD and ARD mem for x20
+  return Op;
 }
 
 static unsigned getRelaxedOpcode(const MCInst &Inst) {