diff --git a/kallithea/public/less/kallithea-select2.less b/kallithea/public/less/kallithea-select2.less
--- a/kallithea/public/less/kallithea-select2.less
+++ b/kallithea/public/less/kallithea-select2.less
@@ -20,10 +20,6 @@
     display: none !important;
   }
 }
-.select2-container.form-control {
-  padding: 0;
-  border: none;
-}
 .branch-switcher-dropdown.select2-drop.select2-drop-active,
 .repo-switcher-dropdown.select2-drop.select2-drop-active {
   box-shadow: none;
@@ -60,6 +56,21 @@
   }
 }
 
+.select2-container {
+  /* select2 already has border and padding, remove bootstrap form-control border and padding */
+  &.form-control {
+    border: 0;
+    padding: 0;
+  }
+  /* make select2 as big as form-controls */
+  .select2-choice {
+    height: 100%;
+  }
+  .select2-chosen {
+    line-height: @input-height-base - 2; /* subtract border width */
+  }
+}
+
 /* highlight query in user autocomplete search results */
 .select2-results .match {
   font-weight: 700;