--- a/Core/Toolbox.cpp	Fri Jun 07 14:26:09 2019 +0200
+++ b/Core/Toolbox.cpp	Fri Jun 07 14:58:27 2019 +0200
@@ -745,7 +745,7 @@
   }
 
 
-  bool Toolbox::IsSHA1(const char* str,
+  bool Toolbox::IsSHA1(const void* str,
                        size_t size)
   {
     if (size == 0)
@@ -753,8 +753,8 @@
       return false;
     }
 
-    const char* start = str;
-    const char* end = str + size;
+    const char* start = reinterpret_cast<const char*>(str);
+    const char* end = start + size;
 
     // Trim the beginning of the string
     while (start < end)