diff --git a/src/_C015.cpp b/src/_C015.cpp
index 822334a8c..9e6f3e625 100644
--- a/src/_C015.cpp
+++ b/src/_C015.cpp
@@ -120,7 +120,7 @@ bool CPlugin_015(CPlugin::Function function, struct EventStruct *event, String&
     case CPlugin::Function::CPLUGIN_WEBFORM_LOAD:
     {
       char thumbprint[60] = {0};
-      LoadCustomControllerSettings(event->ControllerIndex, reinterpret_cast<const uint8_t *>(&thumbprint), sizeof(thumbprint));
+      LoadCustomControllerSettings(event->ControllerIndex, reinterpret_cast<uint8_t *>(&thumbprint), sizeof(thumbprint));
 
       if (strlen(thumbprint) != 59) {
         strcpy(thumbprint, CPLUGIN_015_DEFAULT_THUMBPRINT);