diff --git a/src/nebulae.c b/src/nebulae.c
index 051da08..7ea9e4f 100644
--- a/src/nebulae.c
+++ b/src/nebulae.c
@@ -33,10 +33,11 @@ static double nebu_view = 0.;
 static double nebu_dt   = 0.;
 
 static int nebu_checkCompat(const char* file);
+static void nebu_generate(void);
 static void saveNebulae(float* map, const uint32_t w, const uint32_t h,
     const char* file);
 static SDL_Surface* loadNebulae(const char* file);
-static void nebu_generate(void);
+static SDL_Surface* nebu_surfaceFromNebulaeMap(float* map, const int w, const int h);
 
 /* Initialize the nebulae. */
 void nebu_init(void) {
@@ -345,7 +346,7 @@ static void saveNebulae(float* map, const uint32_t w, const uint32_t h,
   char file_path[PATH_MAX];
   SDL_Surface* sur;
 
-  sur = noise_surfaceFromNebulaeMap(map, w, h);
+  sur = nebu_surfaceFromNebulaeMap(map, w, h);
   
   snprintf(file_path, PATH_MAX, "%s%s", lfile_basePath(), file);
 
@@ -370,3 +371,24 @@ static SDL_Surface* loadNebulae(const char* file) {
   return sur;
 }
 
+/* Generate an SDL_Surface from a 2d nebulae map. */
+SDL_Surface* nebu_surfaceFromNebulaeMap(float* map, const int w, const int h) {
+  int i;
+  SDL_Surface* sur;
+  uint32_t* pix;
+  double c;
+
+  sur = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, RGBAMASK);
+  pix = sur->pixels;
+
+  /* Convert from mapping to actual colours. */
+  SDL_LockSurface(sur);
+  for(i = 0; i < h*w; i++) {
+    c = map[i];
+    pix[i] = RMASK + BMASK + GMASK + (AMASK & (uint32_t)((double)AMASK*c));
+  }
+  SDL_UnlockSurface(sur);
+
+  return sur;
+}
+
diff --git a/src/perlin.c b/src/perlin.c
index c20bf36..89cc255 100644
--- a/src/perlin.c
+++ b/src/perlin.c
@@ -239,24 +239,3 @@ float* noise_genNebulaeMap(const int w, const int h, const int n, float rug) {
   return nebulae;
 }
 
-/* Generate an SDL_Surface from a 2d nebulae map. */
-SDL_Surface* noise_surfaceFromNebulaeMap(float* map, const int w, const int h) {
-  int i;
-  SDL_Surface* sur;
-  uint32_t* pix;
-  double c;
-
-  sur = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, RGBAMASK);
-  pix = sur->pixels;
-
-  /* Convert from mapping to actual colours. */
-  SDL_LockSurface(sur);
-  for(i = 0; i < h*w; i++) {
-    c = map[i];
-    pix[i] = RMASK + BMASK + GMASK + (AMASK & (uint32_t)((double)AMASK*c));
-  }
-  SDL_UnlockSurface(sur);
-
-  return sur;
-}
-
diff --git a/src/perlin.h b/src/perlin.h
index 57c57b4..5db966d 100644
--- a/src/perlin.h
+++ b/src/perlin.h
@@ -3,5 +3,3 @@
 
 float* noise_genNebulaeMap(const int w, const int h, const int n, float rug);
 
-SDL_Surface* noise_surfaceFromNebulaeMap(float* map, const int w, const int h);
-