diff --git a/src/Enums/PeriodicityType.php b/src/Enums/PeriodicityType.php
index ceaa682..0ae34bb 100644
--- a/src/Enums/PeriodicityType.php
+++ b/src/Enums/PeriodicityType.php
@@ -26,7 +26,7 @@ public static function getDateDifference(Carbon $from, Carbon $to, string $unit)
         $unitInPlural = Str::plural($unit);
 
         $differenceMethodName = 'diffIn' . $unitInPlural;
-        $difference = abs($from->{$differenceMethodName}($to));
+        $difference = abs((int) $from->{$differenceMethodName}($to));
 
         return $difference * $delta;
     }