diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index c8cecb3ac8..0791035675 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -82,7 +82,7 @@ struct PFlashCFI01 {
     uint8_t max_device_width;  /* max device width in bytes */
     uint32_t features;
     uint8_t wcycle; /* if 0, the flash is read normally */
-    int ro;
+    bool ro;
     uint8_t cmd;
     uint8_t status;
     uint16_t ident0;
@@ -853,7 +853,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
             return;
         }
     } else {
-        pfl->ro = 0;
+        pfl->ro = false;
     }
 
     if (pfl->blk) {