diff --git a/cmake_targets/tools/build_helper.bash b/cmake_targets/tools/build_helper.bash
index 269ddc6d7a..024894622d 100755
--- a/cmake_targets/tools/build_helper.bash
+++ b/cmake_targets/tools/build_helper.bash
@@ -139,8 +139,9 @@ clean_kernel() {
 }
 
 clean_all_files() {
+ set_openair_env
  dir=$OPENAIR_DIR/cmake_targets
- rm -rf $dir/log $OPENAIR_TARGETS/bin/* 
+ rm -rf $dir/log $OPENAIR_DIR/targets/bin 
  rm -rf $dir/lte_build_oai $dir/lte-simulators/build
  rm -rf $dir/epc_build_oai/build $dir/epc_build_oai/CMakeLists.txt
  rm -rf $dir/oaisim_build_oai/build $dir/oaisim_build_oai/CMakeLists.txt