diff --git a/test_package/test_package.cpp b/test_package/test_package.cpp
index eb2cd2b8..87dd8f34 100644
--- a/test_package/test_package.cpp
+++ b/test_package/test_package.cpp
@@ -20,7 +20,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
-#include <units/physical/si/speed.h>
+#include <units/physical/si/si.h>
 #include <iostream>
 
 using namespace units::physical;