diff --git a/themes/bootstrap3/templates/collection/view.phtml b/themes/bootstrap3/templates/collection/view.phtml
index 33e58e99e7393cc3799fdd8125b3f7c900e88614..0173e7b79afcb33c784604f23afcd98bff3edbe7 100644
--- a/themes/bootstrap3/templates/collection/view.phtml
+++ b/themes/bootstrap3/templates/collection/view.phtml
@@ -4,7 +4,7 @@
   $this->headScript()->appendFile("check_save_statuses.js");
   // Activate Syndetics Plus if necessary:
   if ($this->syndeticsPlus()->isActive()) {
-    echo $this->headScript()->appendFile($this->syndeticsPlus()->getScript());
+    $this->headScript()->appendFile($this->syndeticsPlus()->getScript());
   }
 
   // Add RDF header link if applicable:
diff --git a/themes/bootstrap3/templates/record/view.phtml b/themes/bootstrap3/templates/record/view.phtml
index 116f730062034486dbbc02472b9358ad0e788fc5..c1ce3ff577992996e63c257d0054351ef73d7c1b 100644
--- a/themes/bootstrap3/templates/record/view.phtml
+++ b/themes/bootstrap3/templates/record/view.phtml
@@ -4,7 +4,7 @@
   $this->headScript()->appendFile("check_save_statuses.js");
   // Activate Syndetics Plus if necessary:
   if ($this->syndeticsPlus()->isActive()) {
-    echo $this->headScript()->appendFile($this->syndeticsPlus()->getScript());
+    $this->headScript()->appendFile($this->syndeticsPlus()->getScript());
   }
 
   // Add RDF header link if applicable: