diff --git a/src/wp-content/themes/twentyfifteen/style.css b/src/wp-content/themes/twentyfifteen/style.css
index 141bec426b..a3187b5440 100644
--- a/src/wp-content/themes/twentyfifteen/style.css
+++ b/src/wp-content/themes/twentyfifteen/style.css
@@ -123,6 +123,10 @@ td {
 	text-align: left;
 }
 
+fieldset {
+	min-width: inherit;
+}
+
 blockquote:before,
 blockquote:after,
 q:before,
diff --git a/src/wp-content/themes/twentyfourteen/style.css b/src/wp-content/themes/twentyfourteen/style.css
index 29aec641fa..a6c03cacd1 100644
--- a/src/wp-content/themes/twentyfourteen/style.css
+++ b/src/wp-content/themes/twentyfourteen/style.css
@@ -347,6 +347,7 @@ figure {
 fieldset {
 	border: 1px solid rgba(0, 0, 0, 0.1);
 	margin: 0 0 24px;
+	min-width: inherit;
 	padding: 11px 12px 0;
 }
 
diff --git a/src/wp-content/themes/twentythirteen/style.css b/src/wp-content/themes/twentythirteen/style.css
index fe635a8e95..c5d536218a 100644
--- a/src/wp-content/themes/twentythirteen/style.css
+++ b/src/wp-content/themes/twentythirteen/style.css
@@ -349,6 +349,7 @@ form {
 fieldset {
 	border: 1px solid #c0c0c0;
 	margin: 0 2px;
+	min-width: inherit;
 	padding: 0.35em 0.625em 0.75em;
 }