diff --git a/src/cooling/EAGLE/cooling_rates.h b/src/cooling/EAGLE/cooling_rates.h
index a0267eb211b25e225c5a15157e7c46de2322b415..56196f50bae493301b2259e2be3fa8c1aa1fd629 100644
--- a/src/cooling/EAGLE/cooling_rates.h
+++ b/src/cooling/EAGLE/cooling_rates.h
@@ -18,6 +18,9 @@
  ******************************************************************************/
 
 /* Config parameters. */
+#ifndef SWIFT_EAGLE_COOLING_RATES_H
+#define SWIFT_EAGLE_COOLING_RATES_H
+
 #include "../config.h"
 
 /* Local includes. */
@@ -714,3 +717,5 @@ INLINE static double eagle_cooling_rate(
                                   d_He, cooling, dLambdaNet_du,
                                   /*element_lambda=*/NULL);
 }
+
+#endif /* SWIFT_EAGLE_COOLING_RATES_H */
diff --git a/src/cooling/EAGLE/interpolate.h b/src/cooling/EAGLE/interpolate.h
index 103bda94d9e19489c67805ae1c08327f0e59bdd4..c347907905fe1976378a46630a3517b788f5aff4 100644
--- a/src/cooling/EAGLE/interpolate.h
+++ b/src/cooling/EAGLE/interpolate.h
@@ -27,23 +27,12 @@
 /* Config parameters. */
 #include "../config.h"
 
-/* Some standard headers. */
-#include <float.h>
-#include <hdf5.h>
-#include <math.h>
-#include <time.h>
-
 /* Local includes. */
-#include "chemistry.h"
+#include "align.h"
 #include "cooling_struct.h"
 #include "eagle_cool_tables.h"
 #include "error.h"
-#include "hydro.h"
-#include "io_properties.h"
-#include "parser.h"
-#include "part.h"
-#include "physical_constants.h"
-#include "units.h"
+#include "inline.h"
 
 /**
  * @brief Returns the 1d index of element with 2d indices x,y
diff --git a/tests/testCooling.c b/tests/testCooling.c
index 1c7ec40fffe1b1f1ab7c7428e9bbe8ff29090b75..727a9638b09b871e866fe787438a5707fd43ec6b 100644
--- a/tests/testCooling.c
+++ b/tests/testCooling.c
@@ -16,15 +16,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  ******************************************************************************/
+#include "../config.h"
 
-#include <unistd.h>
-#include "cooling.h"
-#include "cooling/EAGLE/interpolate.h"
-#include "cooling_struct.h"
-#include "hydro.h"
-#include "physical_constants.h"
+/* Local headers. */
 #include "swift.h"
-#include "units.h"
 
 #if 0