diff --git a/test/testrunner.cpp b/test/testrunner.cpp
index d99ccb471..e05fd8193 100644
--- a/test/testrunner.cpp
+++ b/test/testrunner.cpp
@@ -16,6 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <cstdio>
 #include <cstdlib>
 #include "testsuite.h"
 #include "options.h"