diff --git a/fastmap.c b/fastmap.c
index 892436c..5d6d9d6 100644
--- a/fastmap.c
+++ b/fastmap.c
@@ -132,8 +132,9 @@ int main_mem(int argc, char *argv[])
 		fprintf(stderr, "       -C            append FASTA/FASTQ comment to SAM output\n");
 		fprintf(stderr, "       -M            mark shorter split hits as secondary\n\n");
 		fprintf(stderr, "       -I FLOAT[,FLOAT[,INT[,INT]]]\n");
-		fprintf(stderr, "                     specify the mean, standard deviation (10%% of mean), max (4 sigma from the mean)\n");
-		fprintf(stderr, "                     and min of the insert size distribution. FR orientation only. [inferred]\n");
+		fprintf(stderr, "                     specify the mean, standard deviation (10%% of mean if absent), max (4\n");
+		fprintf(stderr, "                     sigma from the mean if absent) and min of the insert size distribution.\n");
+		fprintf(stderr, "                     FR orientation only. [inferred]\n");
 		fprintf(stderr, "\nNote: Please read the man page for detailed description of the command line and options.\n");
 		fprintf(stderr, "\n");
 		free(opt);
diff --git a/main.c b/main.c
index 9a3d044..5a983c9 100644
--- a/main.c
+++ b/main.c
@@ -4,7 +4,7 @@
 #include "utils.h"
 
 #ifndef PACKAGE_VERSION
-#define PACKAGE_VERSION "0.7.7+dev-r453"
+#define PACKAGE_VERSION "0.7.7+dev-r454"
 #endif
 
 int bwa_fa2pac(int argc, char *argv[]);