1 files changed, 1 insertions, 0 deletions
diff --git a/dive.h b/dive.h
index 8f0f84832..d9885184e 100644
--- a/dive.h
+++ b/dive.h
@@ -784,6 +784,7 @@ extern void set_gf(short gflow, short gfhigh, bool gf_low_at_maxdepth);
 extern void cache_deco_state(double, char **datap);
 extern double restore_deco_state(char *data);
 extern void nuclear_regeneration(double time);
+extern void vpmb_start_gradient();
 
 /* this should be converted to use our types */
 struct divedatapoint {