diff --git a/Makefile b/Makefile
index 65bff86..1c92e1a 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ DOCBOOKTOMAN?=docbook-to-man
 
 # Program parameters
 CPFLAG?=-classpath
-JCFLAGS?=-Xlint:all -O -g:none
+JCFLAGS?=-Xlint:all -O -g:none -encoding UTF-8
 JFLAGS+=-Djava.library.path=$(JAVAUNIXLIBDIR)
 
 # Source/Class locations