diff --git a/.changeset/strong-bears-kneel.md b/.changeset/strong-bears-kneel.md
new file mode 100644
index 0000000..1563cc2
--- /dev/null
+++ b/.changeset/strong-bears-kneel.md
@@ -0,0 +1,5 @@
+---
+"@openfun/cunningham-react": patch
+---
+
+fix CSS end warning usage
diff --git a/packages/react/src/components/Modal/index.scss b/packages/react/src/components/Modal/index.scss
index dd682e9..1f0109f 100644
--- a/packages/react/src/components/Modal/index.scss
+++ b/packages/react/src/components/Modal/index.scss
@@ -72,7 +72,7 @@
     position: sticky;
     top: 0;
     display: flex;
-    justify-content: end;
+    justify-content: flex-end;
     z-index: 1;
     height: 0;