diff --git a/src/wp-content/themes/twentynineteen/sass/media/_media.scss b/src/wp-content/themes/twentynineteen/sass/media/_media.scss
index 3fba8c6472176..64e652716d6a1 100644
--- a/src/wp-content/themes/twentynineteen/sass/media/_media.scss
+++ b/src/wp-content/themes/twentynineteen/sass/media/_media.scss
@@ -20,9 +20,9 @@ object {
 .avatar {
 	border-radius: 100%;
 	display: block;
-	height: calc(2.25 * #{$size__spacing-unit});
+	height: auto;
 	min-height: inherit;
-	width: calc(2.25 * #{$size__spacing-unit});
+	width: auto;
 }
 
 svg {
diff --git a/src/wp-content/themes/twentynineteen/style-rtl.css b/src/wp-content/themes/twentynineteen/style-rtl.css
index 45464ae0a66e5..22d480acdff70 100644
--- a/src/wp-content/themes/twentynineteen/style-rtl.css
+++ b/src/wp-content/themes/twentynineteen/style-rtl.css
@@ -6466,9 +6466,9 @@ object {
 .avatar {
   border-radius: 100%;
   display: block;
-  height: calc(2.25 * 1rem);
+  height: auto;
   min-height: inherit;
-  width: calc(2.25 * 1rem);
+  width: auto;
 }
 
 svg {
diff --git a/src/wp-content/themes/twentynineteen/style.css b/src/wp-content/themes/twentynineteen/style.css
index 907ad811d10bf..a13ca5f5ce075 100644
--- a/src/wp-content/themes/twentynineteen/style.css
+++ b/src/wp-content/themes/twentynineteen/style.css
@@ -6478,9 +6478,9 @@ object {
 .avatar {
   border-radius: 100%;
   display: block;
-  height: calc(2.25 * 1rem);
+  height: auto;
   min-height: inherit;
-  width: calc(2.25 * 1rem);
+  width: auto;
 }
 
 svg {