diff --git a/LinearAlgebra/test/Polar_test.cc b/LinearAlgebra/test/Polar_test.cc
index 9e244f2..ba65946 100644
--- a/LinearAlgebra/test/Polar_test.cc
+++ b/LinearAlgebra/test/Polar_test.cc
@@ -2,6 +2,7 @@
 #include <gtest/gtest.h>
 #include <limits>
 #include <math.h>
+#include <chrono>
 
 #include "Polar.h"
 #include "Spherical.h"
diff --git a/LinearAlgebra/test/Spherical16_test.cc b/LinearAlgebra/test/Spherical16_test.cc
index e9fbc40..8eea700 100644
--- a/LinearAlgebra/test/Spherical16_test.cc
+++ b/LinearAlgebra/test/Spherical16_test.cc
@@ -2,6 +2,7 @@
 #include <gtest/gtest.h>
 #include <limits>
 #include <math.h>
+#include <chrono>
 
 #include "Spherical.h"
 #include "Vector3.h"
diff --git a/LinearAlgebra/test/SphericalSingle_test.cc b/LinearAlgebra/test/SphericalSingle_test.cc
index 7840d77..3dedb31 100644
--- a/LinearAlgebra/test/SphericalSingle_test.cc
+++ b/LinearAlgebra/test/SphericalSingle_test.cc
@@ -2,6 +2,7 @@
 #include <gtest/gtest.h>
 #include <limits>
 #include <math.h>
+#include <chrono>
 
 #include "Spherical.h"
 
diff --git a/test/participant_test.cc b/test/participant_test.cc
index 0b4e147..13831bd 100644
--- a/test/participant_test.cc
+++ b/test/participant_test.cc
@@ -59,7 +59,7 @@ TEST(Participant, SiteParticipant) {
 TEST(Participant, ThingMsg) {
   SiteServer* siteServer = new SiteServer(7681);
   ParticipantUDP* participant = new ParticipantUDP("127.0.0.1", 7681, 7682);
-  Thing* thing = new Thing(participant);
+  Thing* thing = new Thing();
   thing->SetName("First Thing");
   thing->SetModel("https://passer.life/extras/ant.jpg");
   
diff --git a/test/thing_test.cc b/test/thing_test.cc
index 74ff48c..ff651c3 100644
--- a/test/thing_test.cc
+++ b/test/thing_test.cc
@@ -24,7 +24,7 @@ TEST(RoboidControlSuite, HiddenParticipant) {
 
 TEST(RoboidControlSuite, IsolatedParticipant) {
   ParticipantUDP* participant = ParticipantUDP::Isolated();
-  Thing* thing = new Thing(participant);
+  Thing* thing = new Thing();
 
   unsigned long milliseconds = Thing::GetTimeMs();
   unsigned long startTime = milliseconds;