diff --git a/platforms/cpus/opentitan-earlgrey.repl b/platforms/cpus/opentitan-earlgrey.repl
index 93dc60a67..35fcf2a3c 100644
--- a/platforms/cpus/opentitan-earlgrey.repl
+++ b/platforms/cpus/opentitan-earlgrey.repl
@@ -4,7 +4,7 @@
 //CPUs
 cpu0: CPU.IbexRiscV32 @ sysbus
     hartId: 0
-    cpuType: "rv32imac"
+    cpuType: "rv32imacb"
     timeProvider: empty
 
 // Memory