diff --git a/soc/arm/ti_simplelink/cc32xx/Kconfig.defconfig.cc3220sf b/soc/arm/ti_simplelink/cc32xx/Kconfig.defconfig.cc3220sf
index fd0f43037b8..5063f9b0e0a 100644
--- a/soc/arm/ti_simplelink/cc32xx/Kconfig.defconfig.cc3220sf
+++ b/soc/arm/ti_simplelink/cc32xx/Kconfig.defconfig.cc3220sf
@@ -13,7 +13,7 @@ config NUM_IRQS
 	int
 	# must be >= the highest interrupt number used
 	# This includes the NWP interrupt
-	default 179
+	default 178
 
 config SYS_CLOCK_HW_CYCLES_PER_SEC
 	int