diff --git a/UI/WebServerResources/GNUmakefile b/UI/WebServerResources/GNUmakefile
index dcd195716..f50288821 100644
--- a/UI/WebServerResources/GNUmakefile
+++ b/UI/WebServerResources/GNUmakefile
@@ -2,7 +2,7 @@
 
 include ../common.make
 
-WEBSERVER_RESOURCE_FILES = $(shell ls *css *ico *js *gif *png *html *txt)
+WEBSERVER_RESOURCE_FILES = $(shell ls *css *ico *js *gif *png *html *txt >/dev/null 2>&1)
 
 all ::