diff --git a/bwamem.c b/bwamem.c
index 08588d5..79785f4 100644
--- a/bwamem.c
+++ b/bwamem.c
@@ -79,7 +79,7 @@ mem_opt_t *mem_opt_init()
 	o->min_chain_weight = 0;
 	o->max_chain_extend = 1<<30;
 	o->mapQ_coef_len = 50; o->mapQ_coef_fac = log(o->mapQ_coef_len);
-	o->min_pa_ratio = 0;
+	o->min_pa_ratio = 0.8;
 	bwa_fill_scmat(o->a, o->b, o->mat);
 	return o;
 }
diff --git a/main.c b/main.c
index 9eb3dbc..313278c 100644
--- a/main.c
+++ b/main.c
@@ -4,7 +4,7 @@
 #include "utils.h"
 
 #ifndef PACKAGE_VERSION
-#define PACKAGE_VERSION "0.7.10-r906-dirty"
+#define PACKAGE_VERSION "0.7.10-r907-dirty"
 #endif
 
 int bwa_fa2pac(int argc, char *argv[]);