diff --git a/CommandLines.cpp b/CommandLines.cpp
index 3568aa7..85a37e6 100644
--- a/CommandLines.cpp
+++ b/CommandLines.cpp
@@ -101,7 +101,7 @@ void init_opt(hifiasm_opt_t* asm_opt)
     asm_opt->thread_num = 1;
     asm_opt->k_mer_length = 51;
 	asm_opt->mz_win = 51;
-	asm_opt->sample_dist = 200;
+	asm_opt->mz_sample_dist = 500;
 	asm_opt->bf_shift = 37;
 	asm_opt->max_kmer_cnt = 2000;
 	asm_opt->high_factor = 5.0;
diff --git a/CommandLines.h b/CommandLines.h
index 082e141..bd61e93 100644
--- a/CommandLines.h
+++ b/CommandLines.h
@@ -3,7 +3,7 @@
 
 #include <pthread.h>
 
-#define HA_VERSION "0.13-r330-dirty"
+#define HA_VERSION "0.13-r332-dirty"
 
 #define VERBOSE 0
 
@@ -34,7 +34,7 @@ typedef struct {
     int thread_num;
     int k_mer_length;
 	int mz_win;
-	int sample_dist;
+	int mz_sample_dist;
 	int bf_shift;
 	int max_kmer_cnt;
 	double high_factor; // coverage cutoff set to high_factor*hom_cov
diff --git a/anchor.cpp b/anchor.cpp
index 9f0e83d..fc7fa56 100644
--- a/anchor.cpp
+++ b/anchor.cpp
@@ -73,7 +73,7 @@ void ha_get_new_candidates(ha_abuf_t *ab, int64_t rid, UC_Read *ucr, overlap_reg
 	rlen = Get_READ_LENGTH(R_INF, rid); // read length
 
 	// get the list of anchors
-	ha_sketch(ucr->seq, ucr->length, asm_opt.mz_win, asm_opt.k_mer_length, 0, !(asm_opt.flag & HA_F_NO_HPC), &ab->mz, ha_flt_tab, asm_opt.sample_dist, k_flag, dbg_ct);
+	ha_sketch(ucr->seq, ucr->length, asm_opt.mz_win, asm_opt.k_mer_length, 0, !(asm_opt.flag & HA_F_NO_HPC), &ab->mz, ha_flt_tab, asm_opt.mz_sample_dist, k_flag, dbg_ct);
 	// minimizer of queried read
 	if (ab->mz.m > ab->old_mz_m) {
 		ab->old_mz_m = ab->mz.m;