diff --git a/tests/nusensors/nusensors.cpp b/tests/nusensors/nusensors.cpp
index 29e2069..9d1a90c 100644
--- a/tests/nusensors/nusensors.cpp
+++ b/tests/nusensors/nusensors.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <string.h>
 #include <stdint.h>
 #include <string.h>
 #include <sys/cdefs.h>