diff --git a/src/FitImage.js b/src/FitImage.js
index a033a44..10c66b0 100644
--- a/src/FitImage.js
+++ b/src/FitImage.js
@@ -117,7 +117,7 @@ class FitImage extends Image {
     if (this.style && this.style.width) {
       return { width: this.style.width };
     }
-    return { flex: 1 };
+    return { flexGrow: 1 };
   }
 
   resize(event) {