diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c
index 076d18e5fd..85c2e65856 100644
--- a/hw/misc/mac_via.c
+++ b/hw/misc/mac_via.c
@@ -399,7 +399,7 @@ static int via1_rtc_compact_cmd(uint8_t value)
         } else if ((value & 0x1c) == 0x08) {
             /* RAM address 0x10 to 0x13 */
             return read | (REG_PRAM_ADDR + 0x10 + (value & 0x03));
-        } else if ((value & 0x43) == 0x41) {
+        } else if ((value & 0x10) == 0x10) {
             /* RAM address 0x00 to 0x0f */
             return read | (REG_PRAM_ADDR + (value & 0x0f));
         }