diff --git a/application/extensions/bootstrap/assets/css/limesurvey-theme.css b/application/extensions/bootstrap/assets/css/limesurvey-theme.css
index 97621160eb5..c92939df108 100644
--- a/application/extensions/bootstrap/assets/css/limesurvey-theme.css
+++ b/application/extensions/bootstrap/assets/css/limesurvey-theme.css
@@ -4321,7 +4321,7 @@ select[multiple].input-group-sm > .input-group-btn > .btn {
   padding: 3px 7px;
   font-size: 12px;
   font-weight: bold;
-  color: : #fff;
+  color: #fff;
   line-height: 1;
   vertical-align: baseline;
   white-space: nowrap;
diff --git a/application/extensions/bootstrap/css/bootstrap.css b/application/extensions/bootstrap/css/bootstrap.css
index c9a703353c9..f7eb64e0797 100644
--- a/application/extensions/bootstrap/css/bootstrap.css
+++ b/application/extensions/bootstrap/css/bootstrap.css
@@ -3558,7 +3558,7 @@ select[multiple].input-group-sm > .input-group-btn > .btn {
   padding: 3px 7px;
   font-size: 12px;
   font-weight: bold;
-  color: : #fff;
+  color: #fff;
   line-height: 1;
   vertical-align: baseline;
   white-space: nowrap;
diff --git a/application/extensions/bootstrap/css/bootstrap.min.css b/application/extensions/bootstrap/css/bootstrap.min.css
index c9a703353c9..f7eb64e0797 100644
--- a/application/extensions/bootstrap/css/bootstrap.min.css
+++ b/application/extensions/bootstrap/css/bootstrap.min.css
@@ -3558,7 +3558,7 @@ select[multiple].input-group-sm > .input-group-btn > .btn {
   padding: 3px 7px;
   font-size: 12px;
   font-weight: bold;
-  color: : #fff;
+  color: #fff;
   line-height: 1;
   vertical-align: baseline;
   white-space: nowrap;