diff --git a/patch.sh b/patch.sh
index 9fd9f7e..2b0c118 100755
--- a/patch.sh
+++ b/patch.sh
@@ -26,6 +26,7 @@ $SUDO patch -p1 < $cloneDir/patches/db_migrations.patch
 $SUDO patch -p1 < $cloneDir/patches/errors_errors.patch
 $SUDO patch -p1 < $cloneDir/patches/expiration-mailer_main.patch
 $SUDO patch -p1 < $cloneDir/patches/linter_linter.patch
+$SUDO patch -p1 < $cloneDir/patches/log_log.patch
 $SUDO patch -p1 < $cloneDir/patches/log-validator_main.patch
 $SUDO patch -p1 < $cloneDir/patches/mail_mailer.patch
 $SUDO patch -p1 < $cloneDir/patches/makefile.patch
diff --git a/patches/log_log.patch b/patches/log_log.patch
new file mode 100644
index 0000000..2d6edac
--- /dev/null
+++ b/patches/log_log.patch
@@ -0,0 +1,14 @@
+diff --git a/log/log.go b/log/log.go
+index dae33eff..7fed903a 100644
+--- a/log/log.go
++++ b/log/log.go
+@@ -92,6 +92,9 @@ func newStdoutWriter(level int) *stdoutWriter {
+ 	}
+ 
+ 	prefix := fmt.Sprintf("%s %s %s[%d]:", shortHostname, datacenter, path.Base(os.Args[0]), os.Getpid())
++	if datacenter == "unknown" {
++		prefix = fmt.Sprintf("%s %s[%d]:", shortHostname, path.Base(os.Args[0]), os.Getpid())
++	}
+ 
+ 	return &stdoutWriter{
+ 		prefix: prefix,