diff --git a/Makefile b/Makefile
index ba5a458..8c56633 100644
--- a/Makefile
+++ b/Makefile
@@ -211,7 +211,9 @@ install-dirs:
 	@mkdir -p $(DESTDIR)$(RESDIRDEF)
 
 install-conf:
-	@cp *.conf $(DESTDIR)$(CONFDIRDEF)
+	@if [ ! -d $(DESTDIR)$(CONFDIR) ]; then\
+	    cp *.conf $(DESTDIR)$(CONFDIRDEF)
+	    fi
 
 
 # Documentation: