1 files changed, 1 insertions, 1 deletions
diff --git a/dive.h b/dive.h
index ee3f63701..0125b76a5 100644
--- a/dive.h
+++ b/dive.h
@@ -801,7 +801,7 @@ extern double restore_deco_state(char *data);
 extern void nuclear_regeneration(double time);
 extern void vpmb_start_gradient();
 extern void vpmb_next_gradient(double deco_time, double surface_pressure);
-extern void boyles_law(double first_stop_pressure, double next_stop_pressure);
+extern void boyles_law(double next_stop_pressure);
 
 /* this should be converted to use our types */
 struct divedatapoint {