diff --git a/src/hidpp-generic.c b/src/hidpp-generic.c
index 12cb3339..cfed6754 100644
--- a/src/hidpp-generic.c
+++ b/src/hidpp-generic.c
@@ -36,7 +36,7 @@
 
 #include "libratbag-private.h"
 
-const char *hidpp10_errors[0xFF] = {
+const char *hidpp10_errors[0x100] = {
 	[0x00] = "ERR_SUCCESS",
 	[0x01] = "ERR_INVALID_SUBID",
 	[0x02] = "ERR_INVALID_ADDRESS",
@@ -50,10 +50,10 @@ const char *hidpp10_errors[0xFF] = {
 	[0x0A] = "ERR_REQUEST_UNAVAILABLE",
 	[0x0B] = "ERR_INVALID_PARAM_VALUE",
 	[0x0C] = "ERR_WRONG_PIN_CODE",
-	[0x0D ... 0xFE] = NULL,
+	[0x0D ... 0xFF] = NULL,
 };
 
-const char *hidpp20_errors[0xFF] = {
+const char *hidpp20_errors[0x100] = {
 	[0x00] = "ERR_NO_ERROR",
 	[0x01] = "ERR_UNKNOWN",
 	[0x02] = "ERR_INVALID_ARGUMENT",
@@ -64,7 +64,7 @@ const char *hidpp20_errors[0xFF] = {
 	[0x07] = "ERR_INVALID_FUNCTION_ID",
 	[0x08] = "ERR_BUSY",
 	[0x09] = "ERR_UNSUPPORTED",
-	[0x0A ... 0xFE] = NULL,
+	[0x0A ... 0xFF] = NULL,
 };
 
 struct hidpp20_1b04_action_mapping {
diff --git a/src/hidpp-generic.h b/src/hidpp-generic.h
index 627dc96f..963db72b 100644
--- a/src/hidpp-generic.h
+++ b/src/hidpp-generic.h
@@ -108,8 +108,8 @@ hidpp_device_set_log_handler(struct hidpp_device *dev,
 			     enum hidpp_log_priority priority,
 			     void *userdata);
 
-extern const char *hidpp10_errors[0xFF];
-extern const char *hidpp20_errors[0xFF];
+extern const char *hidpp10_errors[0x100];
+extern const char *hidpp20_errors[0x100];
 
 const char *
 hidpp20_1b04_get_physical_mapping_name(uint16_t value);