diff --git a/soc/arm/microchip_mec/mec172x/reg/mec172x_espi_iom.h b/soc/arm/microchip_mec/mec172x/reg/mec172x_espi_iom.h
index 8c58626d7af..cbfdfb2c437 100644
--- a/soc/arm/microchip_mec/mec172x/reg/mec172x_espi_iom.h
+++ b/soc/arm/microchip_mec/mec172x/reg/mec172x_espi_iom.h
@@ -385,8 +385,8 @@
 #define MCHP_ESPI_FC_CTRL_ERS0		0x02u
 #define MCHP_ESPI_FC_CTRL_ERL0		0x03u
 #define MCHP_ESPI_FC_CTRL_FUNC(f)	\
-	SHLU32((uint32_t)(f), MCHP_ESPI_FC_CTRL_FUNC_POS) & \
-	MCHP_ESPI_FC_CTRL_FUNC_MASK
+	(SHLU32((uint32_t)(f), MCHP_ESPI_FC_CTRL_FUNC_POS) & \
+	MCHP_ESPI_FC_CTRL_FUNC_MASK)
 
 #define MCHP_ESPI_FC_CTRL_TAG_POS	4u
 #define MCHP_ESPI_FC_CTRL_TAG_MASK0	0x0fu