diff -up slf4j-1.6.1/pom.xml~ slf4j-1.6.1/pom.xml
--- slf4j-1.6.1/pom.xml~	2012-01-13 20:30:23.188554249 +0200
+++ slf4j-1.6.1/pom.xml	2012-01-13 20:45:05.790659657 +0200
@@ -30,6 +30,9 @@
     <slf4j.api.minimum.compatible.version>1.6.0</slf4j.api.minimum.compatible.version>
     <cal10n.version>0.7.4</cal10n.version>
     <log4j.version>1.2.16</log4j.version>
+    <!-- Because of a non-ASCII comment in
+         slf4j-api/src/main/java/org/slf4j/helpers/MessageFormatter.java -->
+    <project.build.sourceEncoding>ISO-8859-1</project.build.sourceEncoding>
   </properties>