diff --git a/src/systemcmds/tests/test_eigen.cpp b/src/systemcmds/tests/test_eigen.cpp
index 87035059aa..6be961e644 100644
--- a/src/systemcmds/tests/test_eigen.cpp
+++ b/src/systemcmds/tests/test_eigen.cpp
@@ -38,6 +38,7 @@
  * @author Johan Jansen <jnsn.johan@gmail.com>
  */
 
+#include <cmath>
 #include <px4_eigen.h>
 #include <float.h>
 #include <stdio.h>