diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 6df37abe9..dfe5f3599 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -5518,7 +5518,7 @@ const machine_t machines[] = {
         .pad2 = 0,
         .cpu = {
             .package = CPU_PKG_SOCKET1,
-            .block = CPU_BLOCK_NONE,
+            .block = CPU_BLOCK(CPU_i486SX, CPU_i486SX_SLENH, CPU_Am486SX, CPU_Cx486S),
             .min_bus = 0,
             .max_bus = 0,
             .min_voltage = 0,