diff --git a/src/engine.c b/src/engine.c
index dde26d2a851d0a376ebc86cc71e37df34d31e375..c91760fe4ae54abb33b6a7edb350b20b018a193e 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -64,6 +64,7 @@
 #include "debug.h"
 #include "error.h"
 #include "gravity.h"
+#include "gravity_cache.h"
 #include "hydro.h"
 #include "map.h"
 #include "memswap.h"
diff --git a/src/space.c b/src/space.c
index b914466fb2fd9a02239b4c1c910cb2c6fa8da769..a4927eaa8cc2f244905ff4bab2e6ea5f402b4c39 100644
--- a/src/space.c
+++ b/src/space.c
@@ -55,7 +55,6 @@
 #include "minmax.h"
 #include "multipole.h"
 #include "restart.h"
-#include "runner.h"
 #include "sort_part.h"
 #include "stars.h"
 #include "threadpool.h"