diff --git a/searx/static/themes/simple/src/less/search.less b/searx/static/themes/simple/src/less/search.less
index 282a0980b..ba5745c79 100644
--- a/searx/static/themes/simple/src/less/search.less
+++ b/searx/static/themes/simple/src/less/search.less
@@ -133,7 +133,7 @@
   .ltr-padding-right(0) !important;
   .ltr-border-right(none);
   width: @search-width;
-  .ltr-rounded-left-corners();
+  .ltr-rounded-left-corners(10px);
 }
 
 #q::-ms-clear,
@@ -143,7 +143,7 @@
 
 #send_search {
   .ltr-border-left(none);
-  .ltr-rounded-right-corners();
+  .ltr-rounded-right-corners(10px);
 
   &:hover {
     cursor: pointer;
diff --git a/searx/static/themes/simple/src/less/style-ltr.less b/searx/static/themes/simple/src/less/style-ltr.less
index c20d65bbf..4810d771a 100644
--- a/searx/static/themes/simple/src/less/style-ltr.less
+++ b/searx/static/themes/simple/src/less/style-ltr.less
@@ -42,11 +42,11 @@
   text-align: right;
 }
 
-.ltr-rounded-left-corners(@radius: 10px) {
+.ltr-rounded-left-corners(@radius) {
   border-radius: @radius 0 0 @radius;
 }
 
-.ltr-rounded-right-corners(@radius: 10px) {
+.ltr-rounded-right-corners(@radius) {
   border-radius: 0 @radius @radius 0;
 }
 
diff --git a/searx/static/themes/simple/src/less/style-rtl.less b/searx/static/themes/simple/src/less/style-rtl.less
index 92eda0c10..6d3e9f525 100644
--- a/searx/static/themes/simple/src/less/style-rtl.less
+++ b/searx/static/themes/simple/src/less/style-rtl.less
@@ -42,11 +42,11 @@
   text-align: left;
 }
 
-.ltr-rounded-left-corners(@radius: 10px) {
+.ltr-rounded-left-corners(@radius) {
   border-radius: 0 @radius @radius 0;
 }
 
-.ltr-rounded-right-corners(@radius: 10px) {
+.ltr-rounded-right-corners(@radius) {
   border-radius: @radius 0 0 @radius;
 }
 
diff --git a/searx/static/themes/simple/src/less/style.less b/searx/static/themes/simple/src/less/style.less
index babe886e8..657e0d3ac 100644
--- a/searx/static/themes/simple/src/less/style.less
+++ b/searx/static/themes/simple/src/less/style.less
@@ -141,7 +141,7 @@ a {
 article[data-vim-selected] {
   background: var(--color-result-vim-selected);
   .ltr-border-left(0.2rem solid var(--color-result-vim-arrow));
-  .ltr-rounded-right-corners();
+  .ltr-rounded-right-corners(10px);
 }
 
 article.result-images[data-vim-selected] {