diff --git a/configure b/configure
index 701c1e19d..31a5f6356 100755
--- a/configure
+++ b/configure
@@ -101,7 +101,7 @@ test-all: all
 	python tools/test.py --mode=debug,release
 
 test-debug: all
-	python tools/test.py --mode=release,debug
+	python tools/test.py --mode=debug
 
 benchmark: all
 	build/default/node benchmark/run.js