diff --git a/tools/wrt350nv2-builder/src/wrt350nv2-builder.c b/tools/wrt350nv2-builder/src/wrt350nv2-builder.c
index f0aa1669095..784f9215471 100644
--- a/tools/wrt350nv2-builder/src/wrt350nv2-builder.c
+++ b/tools/wrt350nv2-builder/src/wrt350nv2-builder.c
@@ -257,7 +257,7 @@ int parse_par_file(FILE *f_par) {
 		// split line if starting with a colon
 		switch (line[0]) {
 			case ':':
-				count = sscanf(line, ":%64s %i %64s", string1, &value, string2);
+				count = sscanf(line, ":%63s %i %63s", string1, &value, string2);
 				if (count != 3) {
 					printf("line %i does not meet defined format (:<mtdname> <mtdsize> <file>)\n", lineno);
 				} else {
@@ -316,7 +316,7 @@ int parse_par_file(FILE *f_par) {
 				}
 				break;
 			case '#':	// integer values
-				count = sscanf(line, "#%64s %i", string1, &value);
+				count = sscanf(line, "#%63s %i", string1, &value);
 				if (count != 2) {
 					printf("line %i does not meet defined format (:<variable name> <integer>\n", lineno);
 				} else {
@@ -332,7 +332,7 @@ int parse_par_file(FILE *f_par) {
 				}
 				break;
 			case '$':	// strings
-				count = sscanf(line, "$%64s %64s", string1, string2);
+				count = sscanf(line, "$%63s %63s", string1, string2);
 				if (count != 2) {
 					printf("line %i does not meet defined format (:<mtdname> <mtdsize> <file>)\n", lineno);
 				} else {