diff --git a/server/simulator_base.cpp b/server/simulator_base.cpp
index a71f721..dfbba6d 100644
--- a/server/simulator_base.cpp
+++ b/server/simulator_base.cpp
@@ -71,8 +71,3 @@ void Simulator_base::reboot()
     // Reboot the simulator
     system("reboot");
 }
-
-constexpr bool Simulator_base::check_input_high(uint32_t data, uint16_t pinnummer)
-{
-    return (data & (1 << pinnummer));
-}
diff --git a/server/simulator_base.hpp b/server/simulator_base.hpp
index 539291d..4684dcf 100644
--- a/server/simulator_base.hpp
+++ b/server/simulator_base.hpp
@@ -160,7 +160,10 @@ class Simulator_base : public QObject
      * @return true If the bit is high
      * @return false If the bit is low
      */
-    constexpr bool check_input_high(uint32_t data, uint16_t pinnummer);
+    inline bool check_input_high(uint32_t data, uint16_t pinnummer)
+    {
+        return (data & (1 << pinnummer));
+    }
   signals:
     /**
      * @brief Signal emitted when the ui of the simulator changes