diff --git a/tcg/tcg.c b/tcg/tcg.c
index 9a2508b..0892a9b 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1894,6 +1894,7 @@
             ts->mem_coherent = 1;
         } else if (ts->val_type == TEMP_VAL_CONST) {
             tcg_out_movi(s, itype, ts->reg, ts->val);
+            ts->mem_coherent = 0;
         }
         s->reg_to_temp[ts->reg] = args[1];
         ts->val_type = TEMP_VAL_REG;