diff --git a/src/conversionOfNumbers/main.c b/src/conversionOfNumbers/main.c
index c2679ca..b6b5151 100644
--- a/src/conversionOfNumbers/main.c
+++ b/src/conversionOfNumbers/main.c
@@ -1,6 +1,7 @@
 #include "conversionOfNumbers.h"
 #include "../userinput.h"
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(){
     int min = 0;
@@ -34,6 +35,7 @@ int main(){
                         int toConvert = usergetd("\nGeben Sie eine Ganzzahl ein: ", NULL, NULL);
                         char* result = convertIntToBinaryStr(toConvert);
                         printf("\nAusgabe (in Binaer): %s\n", result);
+                        free(result);
                     }
                 }
                 if(InputSys == 1){
@@ -47,6 +49,7 @@ int main(){
                         int toConvert = usergetd("\nGeben Sie eine positive Ganzzahl ein: ", &rangeMin, NULL);
                         char* result = convertIntToHex(toConvert);
                         printf("\nAusgabe (in Hex): %s\n", result);
+                        free(result);
                     }
                 }
         }