diff --git a/centreon-plugins/apps/activedirectory/local/mode/dcdiag.pm b/centreon-plugins/apps/activedirectory/local/mode/dcdiag.pm
index d2ea584d2..855741443 100644
--- a/centreon-plugins/apps/activedirectory/local/mode/dcdiag.pm
+++ b/centreon-plugins/apps/activedirectory/local/mode/dcdiag.pm
@@ -88,7 +88,7 @@ sub check_version {
 sub read_config {
     my ($self, %options) = @_;
 
-    my $content_file = <<END_FILE
+    my $content_file = <<'END_FILE';
 <?xml version="1.0" encoding="UTF-8"?>
 <root>
 	<dcdiag language="en">
diff --git a/centreon-plugins/os/windows/local/mode/sessions.pm b/centreon-plugins/os/windows/local/mode/sessions.pm
index 1f9ac33ff..424352f0a 100644
--- a/centreon-plugins/os/windows/local/mode/sessions.pm
+++ b/centreon-plugins/os/windows/local/mode/sessions.pm
@@ -105,7 +105,7 @@ sub new {
 sub read_config {
     my ($self, %options) = @_;
 
-    my $content_file = <<END_FILE
+    my $content_file = <<'END_FILE';
 <?xml version="1.0" encoding="UTF-8"?>
 <root>
     <qwinsta language="en">