diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index f30db367c82eed36540b9db55f7e6b9abb72267b..c47a44dcb702abf97f52ce86fec941a9f5a17318 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -507,7 +507,7 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
 
 	hkey_num = result & 0xf;
 
-	if (hkey_num < 0 || hkey_num > ARRAY_SIZE(pcc->keymap)) {
+	if (hkey_num < 0 || hkey_num >= ARRAY_SIZE(pcc->keymap)) {
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 				  "hotkey number out of range: %d\n",
 				  hkey_num));