diff --git a/xtldr2/config.c b/xtldr2/config.c
index 159f907..45869f5 100644
--- a/xtldr2/config.c
+++ b/xtldr2/config.c
@@ -69,7 +69,7 @@ BlpUpdateGlobalConfiguration(IN PWCHAR Options)
 
             /* Save default OS parameter in global configuration */
             BlMemoryAllocatePool(Length, (PVOID *)&BlpConfiguration.Default);
-            RtlCopyMemory(BlpConfiguration.Default, Argument, (Length * sizeof(WCHAR)) - 1);
+            RtlCopyMemory(BlpConfiguration.Default, Argument, (Length * sizeof(WCHAR)));
             BlpConfiguration.Default[Length] = '\0';
         }
         else if(RtlCompareWideStringInsensitive(Argument, L"DEBUG=", 6) == 0)
@@ -83,7 +83,7 @@ BlpUpdateGlobalConfiguration(IN PWCHAR Options)
             {
                 /* Save debug port in global configuration */
                 BlMemoryAllocatePool(Length, (PVOID *)&BlpConfiguration.Debug);
-                RtlCopyMemory(BlpConfiguration.Debug, Argument, (Length * sizeof(WCHAR)) - 1);
+                RtlCopyMemory(BlpConfiguration.Debug, Argument, (Length * sizeof(WCHAR)));
                 BlpConfiguration.Debug[Length] = '\0';
             }
         }
@@ -116,7 +116,7 @@ BlpUpdateGlobalConfiguration(IN PWCHAR Options)
 
             /* Save theme in global configuration */
             BlMemoryAllocatePool(Length, (PVOID *)&BlpConfiguration.Tune);
-            RtlCopyMemory(BlpConfiguration.Tune, Argument, (Length * sizeof(WCHAR)) - 1);
+            RtlCopyMemory(BlpConfiguration.Tune, Argument, (Length * sizeof(WCHAR)));
             BlpConfiguration.Tune[Length] = '\0';
         }