diff --git a/Source/Core/Config/GeneralizedOption.cs b/Source/Core/Config/GeneralizedOption.cs
index 467b2037..67d4f552 100755
--- a/Source/Core/Config/GeneralizedOption.cs
+++ b/Source/Core/Config/GeneralizedOption.cs
@@ -90,6 +90,9 @@ namespace CodeImp.DoomBuilder.Config
 			bits.Sort();
 
 			//mxd. Determine and check increment steps
+			// biwa. Setting this to be in debug build only. There are valid scenarios where this isn't a problem, specifically MBF21,
+			// where the "alternate damage mode" for sectors is made up of 3 bits.
+			#if DEBUG
 			if(bits.Count > 1)
 			{
 				// Use the second bit as the structure's step
@@ -102,7 +105,8 @@ namespace CodeImp.DoomBuilder.Config
 						General.ErrorLogger.Add(ErrorType.Warning, "Structure \"" + fullpath + "." + name + "\" contains options with mixed increments (option \"" + bits[i].Title + "\" increment (" + (bits[i - 1].Index - bits[i].Index) + ") doesn't match the structure increment (" + bitstep + ")).");
 				}
 			}
-			
+			#endif
+
 			// We have no destructor
 			GC.SuppressFinalize(this);
 		}