diff --git a/api/src/main/java/com/sponus/sponusbe/domain/portfolio/service/PortfolioService.java b/api/src/main/java/com/sponus/sponusbe/domain/portfolio/service/PortfolioService.java
index 84dafc1..da76758 100644
--- a/api/src/main/java/com/sponus/sponusbe/domain/portfolio/service/PortfolioService.java
+++ b/api/src/main/java/com/sponus/sponusbe/domain/portfolio/service/PortfolioService.java
@@ -144,7 +144,8 @@ public PortfolioImageCreateResponse uploadPortfolioImages(long portfolioId, List
 
 		Portfolio portfolio = portfolioRepository.findById(portfolioId)
 			.orElseThrow(() -> new PortfolioException(PORTFOLIO_NOT_FOUND));
-		assert portfolio.getPortfolioImages().isEmpty();
+
+		portfolio.removeAllPortfolioImages();
 
 		AtomicInteger orderNo = new AtomicInteger(0);
 		images.forEach(image -> {
diff --git a/core/core-domain/src/main/java/com/sponus/coredomain/domain/portfolio/Portfolio.java b/core/core-domain/src/main/java/com/sponus/coredomain/domain/portfolio/Portfolio.java
index bea29f8..e7e9421 100644
--- a/core/core-domain/src/main/java/com/sponus/coredomain/domain/portfolio/Portfolio.java
+++ b/core/core-domain/src/main/java/com/sponus/coredomain/domain/portfolio/Portfolio.java
@@ -61,6 +61,10 @@ public void addPortfolioImage(PortfolioImage portfolioImage) {
 		this.portfolioImages.add(portfolioImage);
 	}
 
+	public void removeAllPortfolioImages() {
+		this.portfolioImages.clear();
+	}
+
 	public void update(LocalDate startDate, LocalDate endDate, String description) {
 		this.startDate = startDate == null ? this.startDate : startDate;
 		this.endDate = endDate == null ? this.endDate : endDate;