diff --git a/poky/meta/lib/buildstats.py b/poky/meta/lib/buildstats.py
index 8627ed3..c52b6c3 100644
--- a/poky/meta/lib/buildstats.py
+++ b/poky/meta/lib/buildstats.py
@@ -43,8 +43,8 @@
         # depends on the heartbeat event, which fires less often.
         self.min_seconds = 1
 
-        self.meminfo_regex = re.compile(b'^(MemTotal|MemFree|Buffers|Cached|SwapTotal|SwapFree):\s*(\d+)')
-        self.diskstats_regex = re.compile(b'^([hsv]d.|mtdblock\d|mmcblk\d|cciss/c\d+d\d+.*)$')
+        self.meminfo_regex = re.compile(rb'^(MemTotal|MemFree|Buffers|Cached|SwapTotal|SwapFree):\s*(\d+)')
+        self.diskstats_regex = re.compile(rb'^([hsv]d.|mtdblock\d|mmcblk\d|cciss/c\d+d\d+.*)$')
         self.diskstats_ltime = None
         self.diskstats_data = None
         self.stat_ltimes = None