Index: src/uk/me/parabola/mkgmap/filters/PolygonSubdivSizeSplitterFilter.java
===================================================================
--- src/uk/me/parabola/mkgmap/filters/PolygonSubdivSizeSplitterFilter.java	(revision 3676)
+++ src/uk/me/parabola/mkgmap/filters/PolygonSubdivSizeSplitterFilter.java	(working copy)
@@ -107,8 +107,11 @@
 		int maxDim = shape.getBounds().getMaxDimension();
 		if (maxDim > maxSize){
 			log.debug("Size ", maxDim," larger than ", maxSize);
-			return false;
+			if (shape.getType() != 0x4a)
+				return false;
+			System.err.println("Check overview map: 0x4a polygon size maybe is too large: " + maxDim + " > " + maxSize);
 		}
+
 		return true;
 	}