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-rw-r--r--core/deco.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/core/deco.h b/core/deco.h
index a86ab1a47..ffb52f959 100644
--- a/core/deco.h
+++ b/core/deco.h
@@ -6,7 +6,7 @@
extern "C" {
#endif
-extern double buehlmann_N2_t_halflife[];
+extern const double buehlmann_N2_t_halflife[];
extern int deco_allowed_depth(double tissues_tolerance, double surface_pressure, const struct dive *dive, bool smooth);