diff --git a/TANmask.c b/TANmask.c
index 7e65a65..d5a4d8a 100644
--- a/TANmask.c
+++ b/TANmask.c
@@ -97,7 +97,7 @@ static void TANDEM(int aread, Overlap *ovls, int novl)
 
   { int   i;
     Path *ipath;
- 
+
     evnum = 0;
     for (i = 0; i < novl; i++)
       { ipath = &(ovls[i].path);
@@ -188,7 +188,12 @@ static int make_a_pass(FILE *input, void (*ACTION)(int, Overlap *, int), int tra
   else
     TBYTES = sizeof(uint16);
 
-  Read_Overlap(input,ovls);
+  int rv = Read_Overlap(input,ovls);
+  if (rv)
+    {
+      return 0;
+    }
+
   if (trace)
     { if (ovls[0].path.tlen > pmax)
         { pmax  = 1.2*(ovls[0].path.tlen)+10000;
diff --git a/datander.c b/datander.c
index e49d307..a85a79a 100644
--- a/datander.c
+++ b/datander.c
@@ -20,7 +20,7 @@
  *  Date  :  March 27, 2016
  *
  *********************************************************************************************/
- 
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -210,7 +210,7 @@ int main(int argc, char *argv[])
         if (VERBOSE)
           printf("\n%s\n",command);
         system(command);
-        sprintf(command,"LAmerge TAN.%s.las %s/%s.T*.S.las",SORT_PATH,broot,broot);
+        sprintf(command,"LAmerge TAN.%s.las %s/%s.T*.S.las",broot,SORT_PATH,broot);
         if (VERBOSE)
           printf("%s\n",command);
         system(command);