diff --git a/docs/manual.txt b/docs/manual.txt
index 12a78045..99e1c0e6 100644
--- a/docs/manual.txt
+++ b/docs/manual.txt
@@ -2227,8 +2227,8 @@ Note that in symbols which have a specified size the amount of error correction
 is dependent on the length of the data input and Zint will allow error
 correction capacities as low as 3 codewords.
 
-Alternatively the amount of error correction data can be specified by use of
-the --mode= option or by setting option_1 to a value from the following table:
+Alternatively the amount of error correction data can be specified by use of the
+--secure= option or by setting option_1 to a value from the following table:
 
 ----------------------------------
 Mode  |  Error Correction Capacity
@@ -2441,7 +2441,7 @@ Input  |  Symbol Size
 ---------------------
 
 There are four levels of error correction capacity available for Han Xin Code
-which can be set by using the --mode= option or by setting option_1 to a value
+which can be set by using the --secure= option or by setting option_1 to a value
 from the following table:
 
 --------------------------
diff --git a/frontend/main.c b/frontend/main.c
index e3a5dbbd..3452a852 100644
--- a/frontend/main.c
+++ b/frontend/main.c
@@ -652,7 +652,7 @@ int main(int argc, char **argv) {
                     }
                 }
                 if (!strcmp(long_options[option_index].name, "secure")) {
-                    if ((atoi(optarg) >= 1) && (atoi(optarg) <= 8)) {
+                    if ((atoi(optarg) >= 0) && (atoi(optarg) <= 8)) {
                         my_symbol->option_1 = atoi(optarg);
                     } else {
                         fprintf(stderr, "Warning 114: ECC level out of range\n");