diff --git a/tests/test125cells.c b/tests/test125cells.c
index ea5abb0581e3b2c592bc2de4accd1988d97fa0ce..7c83691552395fcbb5a890c28c67dd663c12fe2c 100644
--- a/tests/test125cells.c
+++ b/tests/test125cells.c
@@ -610,6 +610,10 @@ int main(int argc, char *argv[]) {
   cosmology_init_no_cosmo(&cosmo);
   engine.cosmology = &cosmo;
 
+  struct sink_props sink_props;
+  bzero(&sink_props, sizeof(struct sink_props));
+  engine.sink_properties = &sink_props;
+
   struct runner runner;
   runner.e = &engine;
 
diff --git a/tests/test27cells.c b/tests/test27cells.c
index b606bebfc4693d9bb05e7f4984d7983403a68358..b5755d14b61b847909618ebff69f9d9607393367 100644
--- a/tests/test27cells.c
+++ b/tests/test27cells.c
@@ -505,6 +505,10 @@ int main(int argc, char *argv[]) {
   bzero(&gravity_props, sizeof(struct gravity_props));
   gravity_props.G_Newton = 1.;
 
+  struct sink_props sink_props;
+  bzero(&sink_props, sizeof(struct sink_props));
+  engine.sink_properties = &sink_props;
+
   struct runner runner;
   runner.e = &engine;
 
diff --git a/tests/testActivePair.c b/tests/testActivePair.c
index e810edb5b420c4f9d20ba0e4f7b7a09c02635b5a..bbd83e478b91b896f3579059d1d6e4e6a56daa71 100644
--- a/tests/testActivePair.c
+++ b/tests/testActivePair.c
@@ -557,6 +557,7 @@ int main(int argc, char *argv[]) {
   struct gravity_props gravity_props;
   struct hydro_props hydro_props;
   struct pressure_floor_props pressure_floor;
+  struct sink_props sink_props;
   struct phys_const prog_const;
   struct runner *runner;
   static long long partId = 0;
@@ -650,6 +651,8 @@ int main(int argc, char *argv[]) {
   bzero(&gravity_props, sizeof(struct gravity_props));
   gravity_props.G_Newton = 1.;
   engine.gravity_properties = &gravity_props;
+  bzero(&sink_props, sizeof(struct sink_props));
+  engine.sink_properties = &sink_props;
 
   if (posix_memalign((void **)&runner, SWIFT_STRUCT_ALIGNMENT,
                      sizeof(struct runner)) != 0) {
diff --git a/tests/testPeriodicBC.c b/tests/testPeriodicBC.c
index bc5ea34a2f560a515c6d4feb907cf1777514a8f7..6f4cfb99d2632ec2567f86aa78ef7017129ec34f 100644
--- a/tests/testPeriodicBC.c
+++ b/tests/testPeriodicBC.c
@@ -520,6 +520,10 @@ int main(int argc, char *argv[]) {
   struct pressure_floor_props pressure_floor;
   engine.pressure_floor_props = &pressure_floor;
 
+  struct sink_props sink_props;
+  bzero(&sink_props, sizeof(struct sink_props));
+  engine.sink_properties = &sink_props;
+
   struct gravity_props gravity_props;
   bzero(&gravity_props, sizeof(struct gravity_props));
   gravity_props.G_Newton = 1.f;