diff --git a/src/kx122/kx122.h b/src/kx122/kx122.h
index c078e03e..1622ed50 100644
--- a/src/kx122/kx122.h
+++ b/src/kx122/kx122.h
@@ -22,6 +22,8 @@
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
+#pragma once
+
 #ifdef __cplusplus
 extern "C"{
 #endif
diff --git a/src/kx122/kx122.hpp b/src/kx122/kx122.hpp
index 4471a03d..5f08eb86 100644
--- a/src/kx122/kx122.hpp
+++ b/src/kx122/kx122.hpp
@@ -22,6 +22,8 @@
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
+#pragma once
+
 #include <vector>
 #include <mraa/gpio.hpp>