diff --git a/src/Transformer/Utilities/HueSaturationValueToCyanMagentaYellowKey.php b/src/Transformer/Utilities/HueSaturationValueToCyanMagentaYellowKey.php
index bfced30..c66e963 100644
--- a/src/Transformer/Utilities/HueSaturationValueToCyanMagentaYellowKey.php
+++ b/src/Transformer/Utilities/HueSaturationValueToCyanMagentaYellowKey.php
@@ -39,9 +39,9 @@ class HueSaturationValueToCyanMagentaYellowKey extends AbstractHueSaturationValu
     protected function splitColor(): void
     {
         // ID des zu nutzenden Interval
-        $interval_id = intdiv($this->hueAsPercentGrad , self::INTERVAL);
+        $interval_id = $this->hueAsPercentGrad / self::INTERVAL;
 
-        switch ($interval_id) {
+        switch ((int)$interval_id) {
             case 1: // Yellow
                 $this->cyan = $this->calcColorValue();
                 $this->yellow = $this->saturation;
diff --git a/src/Transformer/Utilities/HueSaturationValueToRedGreenBlue.php b/src/Transformer/Utilities/HueSaturationValueToRedGreenBlue.php
index 30b473d..3520d92 100644
--- a/src/Transformer/Utilities/HueSaturationValueToRedGreenBlue.php
+++ b/src/Transformer/Utilities/HueSaturationValueToRedGreenBlue.php
@@ -36,11 +36,11 @@ class HueSaturationValueToRedGreenBlue extends AbstractHueSaturationValueToUtili
     protected function splitColor(): void
     {
         // ID des zu nutzenden Interval
-        $interval_id = intdiv($this->hueAsPercentGrad , self::INTERVAL);
+        $interval_id = $this->hueAsPercentGrad / self::INTERVAL;
         // Ist der Wert der entgegen gesetzten Farbe.
         $opposite_color_value = $this->value * ( 1 - $this->saturation);
-        
-        switch ($interval_id) {
+
+        switch ((int)$interval_id) {
             case 1:
                 $this->red = $this->calcColorValue();
                 $this->blue = $opposite_color_value;