diff --git a/include/linux/iova.h b/include/linux/iova.h
index 548982ad5f2f..e0a892ae45c0 100644
--- a/include/linux/iova.h
+++ b/include/linux/iova.h
@@ -82,7 +82,7 @@ static inline unsigned long iova_pfn(struct iova_domain *iovad, dma_addr_t iova)
 	return iova >> iova_shift(iovad);
 }
 
-#ifdef CONFIG_IOMMU_IOVA
+#if IS_ENABLED(CONFIG_IOMMU_IOVA)
 int iova_cache_get(void);
 void iova_cache_put(void);