diff --git a/test/test_ctools.sh b/test/test_ctools.sh
index 0c3cf4f..e1157d6 100755
--- a/test/test_ctools.sh
+++ b/test/test_ctools.sh
@@ -36,10 +36,12 @@ rm -rf *.fits *.log *.xml
 #
 # Creates pfiles directory
 # ========================
+rm -rf pfiles
 mkdir -p pfiles
 cp -r ../src/*/*.par pfiles/
 export PFILES=pfiles
 
+
 #
 # Test ctobssim
 # =============