diff --git a/Source/StringBuilderHelper.cs b/Source/StringBuilderHelper.cs
index e3242d7..df484d7 100644
--- a/Source/StringBuilderHelper.cs
+++ b/Source/StringBuilderHelper.cs
@@ -291,8 +291,13 @@ namespace Nuclex.Support {
     /// <param name="builder">String builder the number will be appended to</param>
     /// <param name="remaining">Remaining digits that will be recursively processed</param>
     private static void recursiveAppend(StringBuilder builder, int remaining) {
+#if XBOX
+      int digit = remaining % 10;
+      int tenth = remaining / 10;
+#else
       int digit;
       int tenth = Math.DivRem(remaining, 10, out digit);
+#endif
 
       if(tenth > 0) {
         recursiveAppend(builder, tenth);
@@ -305,8 +310,13 @@ namespace Nuclex.Support {
     /// <param name="builder">String builder the number will be appended to</param>
     /// <param name="remaining">Remaining digits that will be recursively processed</param>
     private static void recursiveAppend(StringBuilder builder, long remaining) {
+#if XBOX
+      long digit = remaining % 10;
+      long tenth = remaining / 10;
+#else
       long digit;
       long tenth = Math.DivRem(remaining, 10, out digit);
+#endif
 
       if(tenth > 0) {
         recursiveAppend(builder, tenth);