diff --git a/dev-python/mpmath/metadata.xml b/dev-python/mpmath/metadata.xml
index 1bb6157b0013e..ac0c55dbbe726 100644
--- a/dev-python/mpmath/metadata.xml
+++ b/dev-python/mpmath/metadata.xml
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-<maintainer type="person">
-  <email>grozin@gentoo.org</email>
-  <name>Andrey Grozin</name>
-</maintainer>
-<maintainer type="project">
-  <email>sci-mathematics@gentoo.org</email>
-  <name>Gentoo Mathematics Project</name>
-</maintainer>
-<use>
-  <flag name="matplotlib">Add support for <pkg>dev-python/matplotlib</pkg></flag>
-</use>
-<upstream>
-  <remote-id type="pypi">mpmath</remote-id>
-  <remote-id type="github">fredrik-johansson/mpmath</remote-id>
-</upstream>
+	<maintainer type="person">
+		<email>grozin@gentoo.org</email>
+		<name>Andrey Grozin</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>sci-mathematics@gentoo.org</email>
+		<name>Gentoo Mathematics Project</name>
+	</maintainer>
+	<use>
+		<flag name="matplotlib">Add support for <pkg>dev-python/matplotlib</pkg></flag>
+	</use>
+	<upstream>
+		<remote-id type="pypi">mpmath</remote-id>
+		<remote-id type="github">fredrik-johansson/mpmath</remote-id>
+	</upstream>
 </pkgmetadata>