1 files changed, 2 insertions, 0 deletions
diff --git a/AlignSample.hpp b/AlignSample.hpp
index f61d0bb..d027823 100644
--- a/AlignSample.hpp
+++ b/AlignSample.hpp
@@ -21,6 +21,8 @@
    along with ODR-DPD.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #include "utils.hpp"
 #include <thread>
 #include <vector>