diff --git a/testing/coverage/coverall b/testing/coverage/coverall
index 753da343..ef84835f 100755
--- a/testing/coverage/coverall
+++ b/testing/coverage/coverall
@@ -11,7 +11,7 @@ V2RAY_COV=${V2RAY_OUT}/cov
 COVERAGE_FILE=${V2RAY_COV}/coverage.txt
 
 function test_package {
-  DIR="v2ray.com/core/$1"
+  DIR="v2ray.com/core$1"
   DEP=$(go list -f '{{ join .Deps "\n" }}' $DIR | grep v2ray | tr '\n' ',')
   DEP=${DEP}$DIR
   RND_NAME=$(openssl rand -hex 16)
@@ -31,7 +31,7 @@ fi
 for DIR in $(find * -type d ! -path "*.git*" ! -path "*vendor*"); do
   TEST_FILES=($DIR/*_test.go)
   if [ -f ${TEST_FILES[0]} ]; then
-    test_package $DIR
+    test_package "/$DIR"
   fi
 done