1 files changed, 2 insertions, 2 deletions
diff --git a/hw/ds1225y.c b/hw/ds1225y.c
index 48d6636b3c..7851096fad 100644
--- a/hw/ds1225y.c
+++ b/hw/ds1225y.c
@@ -33,7 +33,7 @@ typedef enum
 
 struct ds1225y_t
 {
-    target_ulong mem_base;
+    target_phys_addr_t mem_base;
     uint32_t capacity;
     const char *filename;
     QEMUFile *file;
@@ -99,7 +99,7 @@ static CPUWriteMemoryFunc *nvram_none[] = {
 };
 
 /* Initialisation routine */
-ds1225y_t *ds1225y_init(target_ulong mem_base, const char *filename)
+ds1225y_t *ds1225y_init(target_phys_addr_t mem_base, const char *filename)
 {
     ds1225y_t *s;
     int mem_index1, mem_index2;