diff --git a/drivers/common/cnxk/roc_irq.c b/drivers/common/cnxk/roc_irq.c
index a709c4047d..0b21b9e2d9 100644
--- a/drivers/common/cnxk/roc_irq.c
+++ b/drivers/common/cnxk/roc_irq.c
@@ -15,7 +15,7 @@
 
 #define MSIX_IRQ_SET_BUF_LEN                                                   \
 	(sizeof(struct vfio_irq_set) + sizeof(int) *			       \
-			(plt_intr_max_intr_get(intr_handle)))
+			((uint32_t)plt_intr_max_intr_get(intr_handle)))
 
 static int
 irq_get_info(struct plt_intr_handle *intr_handle)