diff --git a/instfiles/pulse/default.pa b/instfiles/pulse/default.pa
index 38e9f790..08741741 100644
--- a/instfiles/pulse/default.pa
+++ b/instfiles/pulse/default.pa
@@ -1,7 +1,12 @@
 .nofail
 .fail
 load-module module-augment-properties
+load-module module-always-sink
+.ifexists module-xrdp-sink.so
 load-module module-xrdp-sink
+.endif
+.ifexists module-xrdp-source.so
 load-module module-xrdp-source
-load-module module-always-sink
+.endif
 load-module module-native-protocol-unix
+