diff --git a/src/linux.c b/src/linux.c
index e8a265f4..87b09c9f 100644
--- a/src/linux.c
+++ b/src/linux.c
@@ -563,7 +563,7 @@ open_i2c_sensor(const char *dev, const char *type, int n, int *div,
 		char *devtype)
 {
 	char path[256];
-	char buf[64];
+	char buf[256];
 	int fd;
 	int divfd;