diff --git a/core/planner.cpp b/core/planner.cpp
index 3a6b50d40..4f80ffdb1 100644
--- a/core/planner.cpp
+++ b/core/planner.cpp
@@ -684,7 +684,7 @@ bool plan(struct deco_state *ds, struct diveplan *diveplan, struct dive *dive, i
 	bool o2break_next = false;
 	int break_cylinder = -1, breakfrom_cylinder = 0;
 	bool last_segment_min_switch = false;
-	int error = 0;
+	bool error = false;
 	bool decodive = false;
 	int first_stop_depth = 0;
 	int laststoptime = timestep;
@@ -1031,7 +1031,7 @@ bool plan(struct deco_state *ds, struct diveplan *diveplan, struct dive *dive, i
 				laststoptime = new_clock - clock;
 				/* Finish infinite deco */
 				if (laststoptime >= 48 * 3600 && depth >= 6000) {
-					error = LONGDECO;
+					error = true;
 					break;
 				}
 
diff --git a/core/planner.h b/core/planner.h
index 0d65acf37..9f26cac37 100644
--- a/core/planner.h
+++ b/core/planner.h
@@ -2,9 +2,6 @@
 #ifndef PLANNER_H
 #define PLANNER_H
 
-#define LONGDECO 1
-#define NOT_RECREATIONAL 2
-
 #include "units.h"
 #include "divemode.h"
 
@@ -44,7 +41,7 @@ extern int validate_gas(const char *text, struct gasmix *gas);
 extern int validate_po2(const char *text, int *mbar_po2);
 extern int get_cylinderid_at_time(struct dive *dive, struct divecomputer *dc, duration_t time);
 extern bool diveplan_empty(struct diveplan *diveplan);
-extern void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool show_disclaimer, int error);
+extern void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool show_disclaimer, bool error);
 extern const char *get_planner_disclaimer();
 
 extern void free_dps(struct diveplan *diveplan);
diff --git a/core/plannernotes.cpp b/core/plannernotes.cpp
index 1ae0c5f0c..3848249f2 100644
--- a/core/plannernotes.cpp
+++ b/core/plannernotes.cpp
@@ -93,7 +93,7 @@ extern std::string get_planner_disclaimer_formatted()
 	return format_string_std(get_planner_disclaimer(), deco);
 }
 
-extern "C" void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool show_disclaimer, int error)
+extern "C" void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool show_disclaimer, bool error)
 {
 	std::string buf;
 	std::string icdbuf;