diff --git a/src/script/runant.py b/src/script/runant.py
index c7b53b692..05fd1f972 100644
--- a/src/script/runant.py
+++ b/src/script/runant.py
@@ -95,6 +95,7 @@ cmdline = ('%s %s -classpath %s -Dant.home=%s %s ' + \
 
 if debug:
     print '\n%s\n\n' % (cmdline)
+sys.stdout.flush()
 
 # Run the biniou!
 os.system(cmdline)