diff --git a/src/const.h b/src/const.h
index ef26525b7865bac4c0164f7678398ca307fc1d67..11ee65bfdfabbf43962c721b8599928c25fef7cc 100644
--- a/src/const.h
+++ b/src/const.h
@@ -85,7 +85,7 @@
 #define SLOPE_LIMITER_CELL_WIDE
 
 /* Self gravity stuff. */
-#define const_gravity_multipole_order 2
+#define const_gravity_multipole_order 1
 #define const_gravity_a_smooth 1.25f
 #define const_gravity_r_cut 4.5f
 #define const_gravity_eta 0.025f