diff --git a/src/nebulae.c b/src/nebulae.c
index 8661562..b066606 100644
--- a/src/nebulae.c
+++ b/src/nebulae.c
@@ -13,7 +13,7 @@
 #include "pause.h"
 #include "perlin.h"
 
-#define NEBULAE_Z             4   /* Z plane. */
+#define NEBULAE_Z             16   /* Z plane. */
 #define NEBULAE_PUFFS         32  /* Amount of puffs to generate. */
 #define NEBULAE_PATH_BG       "gen/nebu_bg_%dx%d_%02d.png"