diff --git a/jump.c b/jump.c
index b6f1261..c169cfb 100644
--- a/jump.c
+++ b/jump.c
@@ -89,7 +89,7 @@ static void mm_jump_split_left(void *km, const mm_idx_t *mi, const mm_mapopt_t *
 	kfree(km, tseq);
 
 	l = m > 0? a[i0].off - r->rs : 0; // may be negative
-	if (m == 1 && clip + l >= opt->jump_min_alen) { // add one more exon
+	if (m == 1 && clip + l >= opt->jump_min_match) { // add one more exon
 		mm_enlarge_cigar(r, 2);
 		memmove(r->p->cigar + 2, r->p->cigar, r->p->n_cigar * 4);
 		r->p->cigar[0] = (clip + l) << 4 | MM_CIGAR_MATCH;
@@ -153,7 +153,7 @@ static void mm_jump_split_right(void *km, const mm_idx_t *mi, const mm_mapopt_t
 	kfree(km, tseq);
 
 	l = m > 0? r->re - a[i0].off : 0; // may be negative
-	if (m == 1 && clip + l >= opt->jump_min_alen) { // add one more exon
+	if (m == 1 && clip + l >= opt->jump_min_match) { // add one more exon
 		mm_enlarge_cigar(r, 2);
 		r->p->cigar[r->p->n_cigar - 1] = ((r->p->cigar[r->p->n_cigar - 1]>>4) - l) << 4 | MM_CIGAR_MATCH;
 		r->p->cigar[r->p->n_cigar] = (a[i0].off2 - a[i0].off) << 4 | MM_CIGAR_N_SKIP;
diff --git a/main.c b/main.c
index b61ea70..1e66df5 100644
--- a/main.c
+++ b/main.c
@@ -82,6 +82,7 @@ static ko_longopt_t long_options[] = {
 	{ "spsc",           ko_required_argument, 357 },
 	{ "junc-pen",       ko_required_argument, 358 },
 	{ "pairing",        ko_required_argument, 359 },
+	{ "jump-min-match", ko_required_argument, 360 },
 	{ "dbg-seed-occ",   ko_no_argument,       501 },
 	{ "help",           ko_no_argument,       'h' },
 	{ "max-intron-len", ko_required_argument, 'G' },
@@ -253,6 +254,7 @@ int main(int argc, char *argv[])
 		else if (c == 355) opt.flag |= MM_F_OUT_DS; // --ds
 		else if (c == 356) opt.rmq_inner_dist = mm_parse_num(o.arg); // --rmq-inner
 		else if (c == 357) fn_spsc = o.arg; // --spsc
+		else if (c == 360) opt.jump_min_match = mm_parse_num(o.arg); // --jump-min-match
 		else if (c == 501) mm_dbg_flag |= MM_DBG_SEED_FREQ; // --dbg-seed-occ
 		else if (c == 330) {
 			fprintf(stderr, "[WARNING] \033[1;31m --lj-min-ratio has been deprecated.\033[0m\n");
diff --git a/minimap.h b/minimap.h
index 78ce306..3116f9b 100644
--- a/minimap.h
+++ b/minimap.h
@@ -5,7 +5,7 @@
 #include <stdio.h>
 #include <sys/types.h>
 
-#define MM_VERSION "2.28-r1263-dirty"
+#define MM_VERSION "2.28-r1264-dirty"
 
 #define MM_F_NO_DIAG       (0x001LL) // no exact diagonal hit
 #define MM_F_NO_DUAL       (0x002LL) // skip pairs where query name is lexicographically larger than target name
@@ -175,7 +175,7 @@ typedef struct {
 
 	int pe_ori, pe_bonus;
 
-	int32_t jump_min_alen;
+	int32_t jump_min_match;
 
 	float mid_occ_frac;  // only used by mm_mapopt_update(); see below
 	float q_occ_frac;
diff --git a/minimap2.1 b/minimap2.1
index 395b967..58b626f 100644
--- a/minimap2.1
+++ b/minimap2.1
@@ -1,4 +1,4 @@
-.TH minimap2 1 "6 April 2025" "minimap2-2.28-dirty (r1259)" "Bioinformatics tools"
+.TH minimap2 1 "6 April 2025" "minimap2-2.28-dirty (r1264)" "Bioinformatics tools"
 .SH NAME
 .PP
 minimap2 - mapping and alignment between collections of DNA sequences
@@ -466,6 +466,11 @@ Score bonus for a splice donor or acceptor found in annotation [9]. Effective wi
 but not
 .BR --spsc .
 .TP
+.BR --jump-min-match \ INT
+Minimum matching length to create a jump [3]. Equivalent to
+.B STAR
+.BR --alignSJDBoverhangMin .
+.TP
 .BI --end-seed-pen \ INT
 Drop a terminal anchor if
 .IR s <log( g )+ INT ,
diff --git a/options.c b/options.c
index a099eae..c9474e7 100644
--- a/options.c
+++ b/options.c
@@ -63,7 +63,7 @@ void mm_mapopt_init(mm_mapopt_t *opt)
 	opt->pe_ori = 0; // FF
 	opt->pe_bonus = 33;
 
-	opt->jump_min_alen = 5;
+	opt->jump_min_match = 3;
 }
 
 void mm_mapopt_update(mm_mapopt_t *opt, const mm_idx_t *mi)