diff --git a/src/komap.py b/src/komap.py
index 0662986..ded7a9d 100644
--- a/src/komap.py
+++ b/src/komap.py
@@ -334,7 +334,7 @@ if options.renderer == "mapnik":
       dk.sort()
       for ele in dk:
         (color, opacity) = demcolors[ele]
-        demramp["ocean"] += '<stop value="%s"  color="rgba(%s,%s,%s,%s)"/>' %(ele+11701, int(color[1:3],16), int(color[3:5],16), int(color[5:7],16), opacity)
+        demramp["ocean"] += '<stop value="%s"  color="rgba(%s,%s,%s,%s)"/>' %(ele+10701, int(color[1:3],16), int(color[3:5],16), int(color[5:7],16), opacity)
         demramp["ground"] += '<stop value="%s"  color="rgba(%s,%s,%s,%s)"/>' %(ele, int(color[1:3],16), int(color[3:5],16), int(color[5:7],16), opacity)