diff --git a/src/libs/audio/impl/pulseaudio/Exception.hpp b/src/libs/audio/impl/pulseaudio/Exception.hpp
index 6c71c33f..43ebc169 100644
--- a/src/libs/audio/impl/pulseaudio/Exception.hpp
+++ b/src/libs/audio/impl/pulseaudio/Exception.hpp
@@ -18,6 +18,8 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #include <string_view>
 
 #include "audio/Exception.hpp"