diff --git a/mate-extra/mate-system-monitor/metadata.xml b/mate-extra/mate-system-monitor/metadata.xml
index 8016e53ab1f3e..abf6a9f6f1df6 100644
--- a/mate-extra/mate-system-monitor/metadata.xml
+++ b/mate-extra/mate-system-monitor/metadata.xml
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-    <maintainer type="project">
-        <email>mate@gentoo.org</email>
-        <name>Gentoo MATE Desktop</name>
-    </maintainer>
+	<maintainer type="project">
+		<email>mate@gentoo.org</email>
+		<name>Gentoo MATE Desktop</name>
+	</maintainer>
 	<use>
 		<flag name="gtk3">Build with GTK+3 instead of GTK+2</flag>
 	</use>
-    <upstream>
-        <remote-id type="github">mate-desktop/mate-system-monitor</remote-id>
-    </upstream>
+	<upstream>
+		<remote-id type="github">mate-desktop/mate-system-monitor</remote-id>
+	</upstream>
 </pkgmetadata>