diff --git a/backend/qr.c b/backend/qr.c
index 87167e97..1193b6a1 100644
--- a/backend/qr.c
+++ b/backend/qr.c
@@ -71,11 +71,6 @@ int qr_code(struct zint_symbol *symbol, unsigned char source[])
 	int errno = 0;
 	int i, j;
 	
-	if(ustrlen(source) > 5254) {
-		strcpy(symbol->errtxt, "input data too long [580]");
-		return ERROR_TOO_LONG;
-	}
-	
 	code = encode(symbol->option_1, symbol->option_2, source);
 	if(code == NULL) {
 		strcpy(symbol->errtxt, "libqrencode failed to encode the input data [581]");
diff --git a/backend/zint.h b/backend/zint.h
index 2244d584..993c06d9 100644
--- a/backend/zint.h
+++ b/backend/zint.h
@@ -42,7 +42,7 @@ struct zint_symbol {
 	int rows;
 	int width;
 	char primary[100];
-	char encoded_data[155][1000];
+	char encoded_data[178][1000];
 	int row_height[155];
 	char errtxt[100];
 };