diff --git a/src/gui/Makefile.am b/src/gui/Makefile.am
index 629a488f2..9b5fad465 100644
--- a/src/gui/Makefile.am
+++ b/src/gui/Makefile.am
@@ -23,6 +23,7 @@ INCLUDES = \
 	-I$(top_srcdir)/lib/libeventserver \
 	-I$(top_srcdir)/lib/libnet \
 	-I$(top_srcdir)/lib/libconfigfile \
+	-I$(top_srcdir)/lib/connection \
 	-I$(top_srcdir)/lib/xmltree \
 	-I$(top_srcdir)/lib/libupnpclient \
 	@CURL_CFLAGS@ \