diff --git a/src/SOCgraphviz.c b/src/SOCgraphviz.c
index 2fb7e85..a34d808 100644
--- a/src/SOCgraphviz.c
+++ b/src/SOCgraphviz.c
@@ -46,7 +46,7 @@ int main(int argc, char *argv[]) {
 			case '0':
 			case '1':
 				if(ch=='1')
-					printf("%d->%d;", row,col);
+					printf("G%dN%d->G%dN%d;", line,row,line,col);
 				col++;
 				break;
 			case '}':