diff --git a/rest_framework/static/rest_framework/css/default.css b/rest_framework/static/rest_framework/css/default.css
index 86fef1773..51ca3ba19 100644
--- a/rest_framework/static/rest_framework/css/default.css
+++ b/rest_framework/static/rest_framework/css/default.css
@@ -40,7 +40,7 @@ td.nested > table {
   margin: 0;
 }
 
-form select, form input, form textarea {
+form select, form input:not([type=checkbox]), form textarea {
   width: 90%;
 }