diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 55dd91b..0e00325 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -1,63 +1,63 @@
 #!/bin/bash
 
 #########################################################################
 
 function test_output {
-  name=$( basename -s .verified $1 )
+  name=$( basename $1 .verified )
   echo "Testing $name ouput"
   echo -n "------------ "
   diff $name.out $name.verified >/dev/null 2>&1
   return $?
 }
 
 #########################################################################
 
 function test_return {
-  name=$( basename -s .py $1 )
+  name=$( basename $1 .py )
   echo "Testing $name.py"
   echo -n "------------ "
   PYTHONPATH=../python python $name.py 2>/dev/null > $name.out
   return $?
 }
 
 #########################################################################
 
 tamaas_path=$(PYTHONPATH=../python python -c 'import tamaas; print tamaas' | cut -d "'" -f 4 )
 
 echo "Tamaas test suite"
 echo "================="
 echo ""
 echo "importing tamaas from $tamaas_path"
 echo ""
 
 n_tests=0
 passed_tests=0
 for test_file in test_*.py; do
     ((n_tests++))
     test_return $test_file
     result=$?
     if [ $result -ne 0 ]; then
         echo "failure"
     else
         echo "success"
         ((passed_tests++))
     fi
 done
 
 for test_file in test_*.verified; do
   ((n_tests++))
   test_output $test_file
   result=$?
   if [ $result -ne 0 ]; then
     echo "failure"
   else
     echo "success"
     ((passed_tests++))
   fi
 done
 
 failed_tests=$((n_tests - passed_tests))
 echo ""
 echo "Test results :"
 echo "    - passed $passed_tests/$n_tests"
 echo "    - failed $failed_tests/$n_tests"