diff --git a/main.c b/main.c
index ae28936..35b5d89 100644
--- a/main.c
+++ b/main.c
@@ -657,14 +657,12 @@ void help() {
   fprintf(stderr, "         -g:  Specify a translation table to use (default");
   fprintf(stderr, " 11).\n");
   fprintf(stderr, "         -h:  Print help menu and exit.\n");
-  fprintf(stderr, "         -i:  Specify input file (default reads from ");
-  fprintf(stderr, "stdin).\n");
-  fprintf(stderr, "         -m:  Treat runs of n's as masked sequence and do");
-  fprintf(stderr, " not build genes across \n");
-  fprintf(stderr, "              them.\n");
-  fprintf(stderr, "         -n:  Bypass the Shine-Dalgarno trainer and force");
-  fprintf(stderr, " the program to scan\n");
-  fprintf(stderr, "              for motifs.\n");
+  fprintf(stderr, "         -i:  Specify FASTA/Genbank input file (default ");
+  fprintf(stderr, "reads from stdin).\n");
+  fprintf(stderr, "         -m:  Treat runs of N as masked sequence; don't");
+  fprintf(stderr, " build genes across them.\n");
+  fprintf(stderr, "         -n:  Bypass Shine-Dalgarno trainer and force");
+  fprintf(stderr, " a full motif scan.\n");
   fprintf(stderr, "         -o:  Specify output file (default writes to ");
   fprintf(stderr, "stdout).\n");
   fprintf(stderr, "         -p:  Select procedure (single or meta).  Default");
diff --git a/sequence.c b/sequence.c
index 463c940..583fdc1 100644
--- a/sequence.c
+++ b/sequence.c
@@ -58,7 +58,7 @@ int read_seq_training(FILE *fp, unsigned char *seq, unsigned char *useq,
     else if(hdr == 1 && (line[0] == '/' && line[1] == '/')) hdr = 0;
     else if(hdr == 1) {
       if(strstr(line, "Expand") != NULL && strstr(line, "gap") != NULL) {
-        sscanf(strstr(line, "gap")+4, "%d", &gapsize); 
+        sscanf(strstr(line, "gap")+4, "%u", &gapsize); 
         if(gapsize < 1 || gapsize > MAX_LINE) {
           fprintf(stderr, "Error: gap size in gbk file can't exceed line");
           fprintf(stderr, " size.\n");
@@ -169,7 +169,7 @@ int next_seq_multi(FILE *fp, unsigned char *seq, unsigned char *useq,
     }
     else if(reading_seq == 1) {
       if(strstr(line, "Expand") != NULL && strstr(line, "gap") != NULL) {
-        sscanf(strstr(line, "gap")+4, "%d", &gapsize); 
+        sscanf(strstr(line, "gap")+4, "%u", &gapsize); 
         if(gapsize < 1 || gapsize > MAX_LINE) {
           fprintf(stderr, "Error: gap size in gbk file can't exceed line");
           fprintf(stderr, " size.\n");