diff --git a/CommandLines.cpp b/CommandLines.cpp
index 07856b8..f5cb0b3 100644
--- a/CommandLines.cpp
+++ b/CommandLines.cpp
@@ -171,7 +171,7 @@ void init_opt(hifiasm_opt_t* asm_opt)
     asm_opt->fp_relevant_reads = NULL;
     asm_opt->is_mode_low_cov = 0;
     asm_opt->write_new_graph_bins = 0;
-    asm_opt->gc_superbubble_tig_max_length = -1;//100000;
+    asm_opt->gc_superbubble_tig_max_length = 100000;
     // end of hamt
     asm_opt->bed_inconsist_rate = 0;  // hamt: disable
 }
diff --git a/CommandLines.h b/CommandLines.h
index 419e430..ead98ed 100644
--- a/CommandLines.h
+++ b/CommandLines.h
@@ -4,7 +4,7 @@
 #include <pthread.h>
 
 #define HA_VERSION "0.13-r308"
-#define HAMT_VERSION "0.1-r038"
+#define HAMT_VERSION "0.1-r039"
 
 
 // #define VERBOSE 1