diff --git a/src/monocoque/devices/hapticeffect.c b/src/monocoque/devices/hapticeffect.c
index 54df4ff..671d143 100644
--- a/src/monocoque/devices/hapticeffect.c
+++ b/src/monocoque/devices/hapticeffect.c
@@ -27,12 +27,12 @@ bool hasTyreDiameter(SimData* simdata)
     return true;
 }
 
-void loadtyreconfig(SimData* simdata, FILE* configfile)
+void loadtyreconfig(SimData* simdata, char* configfile)
 {
     json_t *root;
     json_error_t error;
 
-    root = json_loadf(configfile, 0, NULL);
+    root = json_load_file(configfile, 0, NULL);
 
     if(!root)
     {
@@ -119,7 +119,7 @@ void loadtyreconfig(SimData* simdata, FILE* configfile)
     json_decref(cararray);
 }
 
-void savetyreconfig(SimData* simdata, FILE* configfile)
+void savetyreconfig(SimData* simdata, char* configfile)
 {
 
     json_t* object = json_object();
@@ -137,7 +137,7 @@ void savetyreconfig(SimData* simdata, FILE* configfile)
 
     json_array_append(array, object);
 
-    json_t* file = json_loadf(configfile, 0, NULL);
+    json_t* file = json_load_file(configfile, 0, NULL);
 
     if(!file)
     {
@@ -155,7 +155,7 @@ void savetyreconfig(SimData* simdata, FILE* configfile)
         json_array_append(cararray, array);
     }
 
-    json_dumpf(file, configfile, 0);
+    json_dump_file(file, configfile, 0);
 
     json_decref(tyre0);
     json_decref(tyre1);
@@ -184,7 +184,7 @@ void getTyreDiameter(SimData* simdata)
 }
 
 
-int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold, int useconfig, int* configcheck, FILE* configfile)
+int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold, int useconfig, int* configcheck, char* configfile)
 {
     int play = 0;
     double wheelslip[4];
diff --git a/src/monocoque/devices/hapticeffect.h b/src/monocoque/devices/hapticeffect.h
index d07fdb9..c5bb89a 100644
--- a/src/monocoque/devices/hapticeffect.h
+++ b/src/monocoque/devices/hapticeffect.h
@@ -4,6 +4,6 @@
 #include <stdio.h>
 #include "../simulatorapi/simapi/simapi/simdata.h"
 
-int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold, int useconfig, int* configcheck, FILE* configfile);
+int slipeffect(SimData* simdata, int effecttype, int tyre, double threshold, int useconfig, int* configcheck, char* configfile);
 
 #endif
diff --git a/src/monocoque/devices/simdevice.h b/src/monocoque/devices/simdevice.h
index 6978cfd..be8887b 100644
--- a/src/monocoque/devices/simdevice.h
+++ b/src/monocoque/devices/simdevice.h
@@ -27,7 +27,7 @@ struct SimDevice
     MonocoqueTyreIdentifier tyre;
     int useconfig;
     int* configcheck;
-    FILE* tyrediameterconfig;
+    char* tyrediameterconfig;
 };
 
 typedef struct {
diff --git a/src/monocoque/devices/usbhapticdevice.c b/src/monocoque/devices/usbhapticdevice.c
index 052559c..a160b30 100644
--- a/src/monocoque/devices/usbhapticdevice.c
+++ b/src/monocoque/devices/usbhapticdevice.c
@@ -11,7 +11,7 @@
 #include "../../slog/slog.h"
 
 
-int usbhapticdev_update(USBGenericHapticDevice* usbhapticdevice, SimData* simdata, int tyre, int useconfig, int* configcheck, FILE* configfile)
+int usbhapticdev_update(USBGenericHapticDevice* usbhapticdevice, SimData* simdata, int tyre, int useconfig, int* configcheck, char* configfile)
 {
 
     int play = slipeffect(simdata, usbhapticdevice->effecttype, tyre, usbhapticdevice->threshold, useconfig, configcheck, configfile);
diff --git a/src/monocoque/devices/usbhapticdevice.h b/src/monocoque/devices/usbhapticdevice.h
index 859291d..6d9131b 100644
--- a/src/monocoque/devices/usbhapticdevice.h
+++ b/src/monocoque/devices/usbhapticdevice.h
@@ -28,7 +28,7 @@ typedef struct
 USBGenericHapticDevice;
 
 
-int usbhapticdev_update(USBGenericHapticDevice* hapticdevice, SimData* simdata, int tyre, int useconfig, int* configcheck, FILE* configfile);
+int usbhapticdev_update(USBGenericHapticDevice* hapticdevice, SimData* simdata, int tyre, int useconfig, int* configcheck, char* configfile);
 int usbhapticdev_init(USBGenericHapticDevice* hapticdevice, DeviceSettings* ds);
 int usbhapticdev_free(USBGenericHapticDevice* hapticdevice);
 
diff --git a/src/monocoque/helper/confighelper.h b/src/monocoque/helper/confighelper.h
index 6fa3890..97625c1 100644
--- a/src/monocoque/helper/confighelper.h
+++ b/src/monocoque/helper/confighelper.h
@@ -79,7 +79,7 @@ typedef struct
     Simulator sim_name;
     int configcheck;
     int useconfig;
-    FILE* tyre_diameter_config;
+    char* tyre_diameter_config;
 }
 MonocoqueSettings;
 
diff --git a/src/monocoque/monocoque.c b/src/monocoque/monocoque.c
index 6735cb0..24c4e81 100644
--- a/src/monocoque/monocoque.c
+++ b/src/monocoque/monocoque.c
@@ -97,12 +97,8 @@ int main(int argc, char** argv)
         slog_disable(SLOG_DEBUG);
     }
 
-    ms->tyre_diameter_config = fopen(diameters_file_str, "r");
+    ms->tyre_diameter_config = strdup(diameters_file_str);
     ms->useconfig = 1;
-    if (ms->tyre_diameter_config == NULL)
-    {
-        slogw("Could not initialize tyre diameters save file.");
-    }
     ms->configcheck = 0;
     free(diameters_file_str);
 
@@ -286,7 +282,10 @@ configcleanup:
 
 cleanup_final:
 
-    fclose(ms->tyre_diameter_config);
+    if(ms->tyre_diameter_config != NULL)
+    {
+        free(ms->tyre_diameter_config);
+    }
     free(ms);
     free(p);
     exit(0);