--- modes/life3d.c
+++ modes/life3d.c
@@ -2271,7 +2271,7 @@
 		return False;
 }
 
-static Bool populateGlider(life3dstruct * lp, char *glider, int offsetSwitch,
+static void populateGlider(life3dstruct * lp, char *glider, int offsetSwitch,
 		int hsp, int vsp, int asp, int hoff, int voff, int aoff) {
 	int x, y, z, temp;