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-rw-r--r--display-gtk.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/display-gtk.h b/display-gtk.h
index f88d96633..5dc616bf9 100644
--- a/display-gtk.h
+++ b/display-gtk.h
@@ -32,6 +32,7 @@ typedef struct {
extern visible_cols_t visible_cols;
extern partial_pressure_graphs_t partial_pressure_graphs;
+extern gboolean profile_red_ceiling;
#define GRAPHS_ENABLED (partial_pressure_graphs.po2 || partial_pressure_graphs.pn2 || partial_pressure_graphs.phe)