diff --git a/administrator/templates/isis/css/template-rtl.css b/administrator/templates/isis/css/template-rtl.css
index 32910fece5c0b..feba8dd936a4a 100644
--- a/administrator/templates/isis/css/template-rtl.css
+++ b/administrator/templates/isis/css/template-rtl.css
@@ -2440,6 +2440,9 @@ input[type="submit"].btn.btn-mini {
 .btn-group:first-child {
 	*margin-left: 0;
 }
+.btn-group .btn + .btn {
+	margin-left: -1px;
+}
 .btn-group + .btn-group {
 	margin-left: 5px;
 }
diff --git a/administrator/templates/isis/css/template.css b/administrator/templates/isis/css/template.css
index b4fa0b8898bd9..a5304e48866c6 100644
--- a/administrator/templates/isis/css/template.css
+++ b/administrator/templates/isis/css/template.css
@@ -2440,6 +2440,9 @@ input[type="submit"].btn.btn-mini {
 .btn-group:first-child {
 	*margin-left: 0;
 }
+.btn-group .btn + .btn {
+	margin-left: -1px;
+}
 .btn-group + .btn-group {
 	margin-left: 5px;
 }
diff --git a/administrator/templates/isis/less/bootstrap/button-groups.less b/administrator/templates/isis/less/bootstrap/button-groups.less
index 7fd4fe73d8788..c861628cddbdf 100644
--- a/administrator/templates/isis/less/bootstrap/button-groups.less
+++ b/administrator/templates/isis/less/bootstrap/button-groups.less
@@ -12,6 +12,9 @@
   vertical-align: middle; // match .btn alignment given font-size hack above
   white-space: nowrap; // prevent buttons from wrapping when in tight spaces (e.g., the table on the tests page)
   .ie7-restore-left-whitespace();
+  .btn + .btn {
+    margin-left: -1px;
+  }
 }
 
 // Space out series of button groups