diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index 750f75c257..11db2f3c8d 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -1778,9 +1778,12 @@ static void gen_shiftd_rm_T1(DisasContext *s, MemOp ot, int op1,
         } else {
             tcg_gen_deposit_tl(s->T1, s->T0, s->T1, 16, 16);
         }
-        /* FALLTHRU */
-#ifdef TARGET_X86_64
+        /*
+         * If TARGET_X86_64 defined then fall through into MO_32 case,
+         * otherwise fall through default case.
+         */
     case MO_32:
+#ifdef TARGET_X86_64
         /* Concatenate the two 32-bit values and use a 64-bit shift.  */
         tcg_gen_subi_tl(s->tmp0, count, 1);
         if (is_right) {