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-rw-r--r--deco.c2
-rw-r--r--dive.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/deco.c b/deco.c
index 6e73c50cb..023a20f72 100644
--- a/deco.c
+++ b/deco.c
@@ -126,7 +126,7 @@ static double tissue_tolerance_calc(const struct dive *dive)
}
/* add period_in_seconds at the given pressure and gas to the deco calculation */
-double add_segment(double pressure, struct gasmix *gasmix, int period_in_seconds, int ccpo2, const struct dive *dive)
+double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int ccpo2, const struct dive *dive)
{
int ci;
int fo2 = gasmix->o2.permille ? gasmix->o2.permille : O2_IN_AIR;
diff --git a/dive.h b/dive.h
index 54c4fd470..fcbaca713 100644
--- a/dive.h
+++ b/dive.h
@@ -598,7 +598,7 @@ extern void subsurface_command_line_exit(gint *, gchar ***);
#define FRACTION(n,x) ((unsigned)(n)/(x)),((unsigned)(n)%(x))
-extern double add_segment(double pressure, struct gasmix *gasmix, int period_in_seconds, int setpoint, const struct dive *dive);
+extern double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int setpoint, const struct dive *dive);
extern void clear_deco(double surface_pressure);
extern void dump_tissues(void);
extern unsigned int deco_allowed_depth(double tissues_tolerance, double surface_pressure, struct dive *dive, gboolean smooth);