diff --git a/src/system/helpers.cpp b/src/system/helpers.cpp
index 56983c9d0..a66f53e8c 100644
--- a/src/system/helpers.cpp
+++ b/src/system/helpers.cpp
@@ -913,7 +913,7 @@ std::string getJFFS2MountPoint(int mtdPos)
 	char lineRead[1024], sMount[512], sFs[512];
 	memset(lineRead, '\0', sizeof(lineRead));
 	while (fgets(lineRead, sizeof(lineRead)-1, fd)) {
-		sscanf(lineRead, "/dev/mtdblock%d %512s %512s", &iBlock, sMount, sFs);
+		sscanf(lineRead, "/dev/mtdblock%d %511s %511s", &iBlock, sMount, sFs);
 		if ((iBlock == mtdPos) && (strstr(sMount, "/") != NULL) && (strstr(sFs, "jffs2") != NULL)) {
 			fclose(fd);
 			return sMount;