diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index a8a5eaebec..413e683aec 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -1027,14 +1027,15 @@ static void dec_store(DisasContext *dc)
 {
     TCGv t, *addr, swx_addr;
     TCGLabel *swx_skip = NULL;
-    unsigned int size, rev = 0, ex = 0;
+    unsigned int size;
+    bool rev = false, ex = false;
     TCGMemOp mop;
 
     mop = dc->opcode & 3;
     size = 1 << mop;
     if (!dc->type_b) {
-        rev = (dc->ir >> 9) & 1;
-        ex = (dc->ir >> 10) & 1;
+        rev = extract32(dc->ir, 9, 1);
+        ex = extract32(dc->ir, 10, 1);
     }
     mop |= MO_TE;
     if (rev) {