diff --git a/_sass/minima/_base.scss b/_sass/minima/_base.scss
index a6f104e448..9aa3287033 100644
--- a/_sass/minima/_base.scss
+++ b/_sass/minima/_base.scss
@@ -65,6 +65,7 @@ main {
  */
 img {
   max-width: 100%;
+  height: auto;
   vertical-align: middle;
 }