diff --git a/backend/pdf417.c b/backend/pdf417.c
index 28e34cd9..91d47e63 100644
--- a/backend/pdf417.c
+++ b/backend/pdf417.c
@@ -437,7 +437,7 @@ int pdf417(struct zint_symbol *symbol, unsigned char chaine[], int length)
 {
 	int i, k, j, indexchaine, indexliste, mode, longueur, loop, mccorrection[520], offset;
 	int total, chainemc[2700], mclength, c1, c2, c3, dummy[35], codeerr;
-	char codebarre[100], pattern[580];
+	char codebarre[140], pattern[580];
 	int debug = 0;
 
 	codeerr = 0;