diff --git a/geostat.cpp b/geostat.cpp
index 053cb5e..5eceba5 100644
--- a/geostat.cpp
+++ b/geostat.cpp
@@ -603,6 +603,9 @@ int main(int argc, char** argv) {
 		}
 		std::cout << "</table>\n";
 
+//		D/T matrix
+		n = 0;
+
 		std::cout << "<h2>Difficulty / terrain matrix</h2>\n";
 		std::cout << "<table class=\"dt\">\n";
 		std::cout << "<tr><th></th>";