diff --git a/run_tests.sh b/run_tests.sh
index cb6a5df..c807f79 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -84,6 +84,11 @@
       return $?
   fi
 
+  if [ $coverage -eq 1 ]; then
+      ${wrapper} python setup.py test --coverage
+      return $?
+  fi
+
   if [ $serial -eq 1 ]; then
       ${wrapper} testr run --subunit $testrargs | ${wrapper} subunit-2to1 | ${wrapper} tools/colorizer.py
   else
@@ -137,10 +142,6 @@
     exit
 fi
 
-if [ $coverage -eq 1 ]; then
-    $testrargs = "--coverage $testrargs"
-fi
-
 run_tests
 retval=$?