diff --git a/src/cell_drift.c b/src/cell_drift.c
index af1c34f324..91292a8742 100644
--- a/src/cell_drift.c
+++ b/src/cell_drift.c
@@ -31,6 +31,7 @@
 #include "feedback.h"
 #include "gravity.h"
 #include "multipole.h"
+#include "pressure_floor.h"
 #include "rt.h"
 #include "star_formation.h"
 #include "tracers.h"
diff --git a/src/space_first_init.c b/src/space_first_init.c
index d8c67637ea..46c9d5f573 100644
--- a/src/space_first_init.c
+++ b/src/space_first_init.c
@@ -30,6 +30,7 @@
 #include "chemistry.h"
 #include "engine.h"
 #include "gravity.h"
+#include "pressure_floor.h"
 #include "rt.h"
 #include "sink.h"
 #include "star_formation.h"
diff --git a/src/space_init.c b/src/space_init.c
index af049981c8..b0e710ca73 100644
--- a/src/space_init.c
+++ b/src/space_init.c
@@ -30,6 +30,7 @@
 #include "chemistry.h"
 #include "engine.h"
 #include "gravity.h"
+#include "pressure_floor.h"
 #include "rt.h"
 #include "sink.h"
 #include "star_formation.h"