diff --git a/modules/backend/formwidgets/DatePicker.php b/modules/backend/formwidgets/DatePicker.php
index da774b90b..5bfaea068 100644
--- a/modules/backend/formwidgets/DatePicker.php
+++ b/modules/backend/formwidgets/DatePicker.php
@@ -90,13 +90,13 @@ class DatePicker extends FormWidgetBase
         $this->mode = strtolower($this->mode);
 
         if ($this->minDate !== null) {
-            $this->minDate = is_integer($this->minDate)
+            $this->minDate = is_int($this->minDate)
                 ? Carbon::createFromTimestamp($this->minDate)
                 : Carbon::parse($this->minDate);
         }
 
         if ($this->maxDate !== null) {
-            $this->maxDate = is_integer($this->maxDate)
+            $this->maxDate = is_int($this->maxDate)
                 ? Carbon::createFromTimestamp($this->maxDate)
                 : Carbon::parse($this->maxDate);
         }
diff --git a/modules/cms/twig/DebugExtension.php b/modules/cms/twig/DebugExtension.php
index cf58389b5..f747e8c02 100644
--- a/modules/cms/twig/DebugExtension.php
+++ b/modules/cms/twig/DebugExtension.php
@@ -608,6 +608,6 @@ class DebugExtension extends Twig_Extension
             $strings[] = $key . ': ' . $value;
         }
 
-        return join('; ', $strings);
+        return implode('; ', $strings);
     }
 }