diff --git a/cpueff-goweb/Makefile b/cpueff-goweb/Makefile
index a5811ca8..073dae01 100644
--- a/cpueff-goweb/Makefile
+++ b/cpueff-goweb/Makefile
@@ -7,7 +7,7 @@ vet:
 	go vet .
 
 build:
-	go clean; rm -rf pkg cpueff-goweb*; go build ${flags}
+	go clean; rm -rf pkg cpueff-goweb*; go build -tags netgo ${flags}
 
 install:
 	go install