diff --git a/src/soc/amd/cezanne/include/soc/smi.h b/src/soc/amd/cezanne/include/soc/smi.h
index dc299a5a95..f0948bbbc7 100644
--- a/src/soc/amd/cezanne/include/soc/smi.h
+++ b/src/soc/amd/cezanne/include/soc/smi.h
@@ -6,7 +6,7 @@
 #include <types.h>
 
 #define SMI_GEVENTS			24
-#define SCIMAPS				58
+#define SCIMAPS				59 /* 0..58 */
 #define SCI_GPES			32
 
 #define SMI_EVENT_STATUS		0x0
diff --git a/src/soc/amd/picasso/include/soc/smi.h b/src/soc/amd/picasso/include/soc/smi.h
index e86809eb2a..8256b2116a 100644
--- a/src/soc/amd/picasso/include/soc/smi.h
+++ b/src/soc/amd/picasso/include/soc/smi.h
@@ -6,7 +6,7 @@
 #include <types.h>
 
 #define SMI_GEVENTS			24
-#define SCIMAPS				58
+#define SCIMAPS				59 /* 0..58 */
 #define SCI_GPES			32
 
 #define SMI_EVENT_STATUS		0x0
diff --git a/src/soc/amd/stoneyridge/include/soc/smi.h b/src/soc/amd/stoneyridge/include/soc/smi.h
index 61624755c5..0e0bc3715a 100644
--- a/src/soc/amd/stoneyridge/include/soc/smi.h
+++ b/src/soc/amd/stoneyridge/include/soc/smi.h
@@ -4,7 +4,7 @@
 #define AMD_STONEYRIDGE_SMI_H
 
 #define SMI_GEVENTS			24
-#define SCIMAPS				58
+#define SCIMAPS				59 /* 0..58 */
 #define SCI_GPES			32
 
 #define SMI_EVENT_STATUS		0x0