diff --git a/src/coreclr/jit/instr.cpp b/src/coreclr/jit/instr.cpp
index 97d0d94754a416..42580242c408ac 100644
--- a/src/coreclr/jit/instr.cpp
+++ b/src/coreclr/jit/instr.cpp
@@ -1487,6 +1487,7 @@ instruction CodeGen::ins_Move_Extend(var_types srcType, bool srcInReg)
     return INS_vmov;
 #else
     NYI("ins_Move_Extend");
+    return INS_invalid;
 #endif
 }