diff --git a/test/run-interactive b/test/run-interactive
index a342c223b162547912411e856e94bfa55dce2f52..5c6f489a451abf86f7798a53929b46e929fa1f75 100755
--- a/test/run-interactive
+++ b/test/run-interactive
@@ -3,7 +3,7 @@
 Xephyr -screen 500x500 :7 > /dev/null 2>&1 &
 pid=${!}
 
-DISPLAY=:7 prove test/feh-scr-i.t test/feh-i.t
+DISPLAY=:7 prove -j1 test/feh-scr-i.t test/feh-i.t
 ret=${?}
 
 kill ${pid}