diff --git a/bwamem.c b/bwamem.c
index 7ac9bf8..00e0cc1 100644
--- a/bwamem.c
+++ b/bwamem.c
@@ -68,7 +68,7 @@ mem_opt_t *mem_opt_init()
 	o->chunk_size = 10000000;
 	o->n_threads = 1;
 	o->max_hits = 10;
-	o->max_matesw = 100;
+	o->max_matesw = 50;
 	o->mask_level_redun = 0.95;
 	o->min_chain_weight = 0;
 	o->max_chain_extend = 1<<30;
diff --git a/main.c b/main.c
index aa210dd..3505ce7 100644
--- a/main.c
+++ b/main.c
@@ -4,7 +4,7 @@
 #include "utils.h"
 
 #ifndef PACKAGE_VERSION
-#define PACKAGE_VERSION "0.7.8-r747-dirty"
+#define PACKAGE_VERSION "0.7.8-r748-dirty"
 #endif
 
 int bwa_fa2pac(int argc, char *argv[]);