diff --git a/similar/main/weapon.c b/similar/main/weapon.c
index 79144064e..aaba73b3d 100644
--- a/similar/main/weapon.c
+++ b/similar/main/weapon.c
@@ -960,11 +960,6 @@ fix64	Seismic_disturbance_start_time = 0, Seismic_disturbance_end_time;
 
 int Seismic_level=0;
 
-int	on_seismic_level(void)
-{
-	return Seismic_level;
-}
-
 void init_seismic_disturbances(void)
 {
 	Seismic_disturbance_start_time = 0;