diff --git a/bin/DSurfTomo b/bin/DSurfTomo
index 74536d5..4be25a5 100755
Binary files a/bin/DSurfTomo and b/bin/DSurfTomo differ
diff --git a/example/DSurfTomo.in b/example/DSurfTomo.in
index 9bb20c2..67f1e4c 100644
--- a/example/DSurfTomo.in
+++ b/example/DSurfTomo.in
@@ -5,7 +5,7 @@ surfdataTB.dat			 c: data file
 18 18 9                          c: nx ny nz (grid number in lat lon and depth direction)
 25.2  121.35                     c: goxd gozd (upper left point,[lat,lon])
 0.015 0.017                      c: dvxd dvzd (grid interval in lat and lon direction)
-25i                              c: nsrc*maxf 
+25                              c: nsrc*maxf 
 4.0  0.0                         c: weight damp
 3                                c: nsublayer (numbers of sublayers for each grid interval:grid --> layer)
 0.5 2.8                          c: minimum velocity, maximum velocity
diff --git a/src/DSurfTomo b/src/DSurfTomo
index 2afc247..4be25a5 100755
Binary files a/src/DSurfTomo and b/src/DSurfTomo differ