diff --git a/commands/command_divelist.cpp b/commands/command_divelist.cpp
index b6901c523..6ca13f5f9 100644
--- a/commands/command_divelist.cpp
+++ b/commands/command_divelist.cpp
@@ -521,6 +521,11 @@ ImportDives::ImportDives(struct divelog *log, int flags, const QString &source)
 			continue;
 		filterPresetsToAdd.emplace_back(preset.name, preset.data);
 	}
+
+	free(dives_to_add.dives);
+	free(dives_to_remove.dives);
+	free(trips_to_add.trips);
+	free(sites_to_add.dive_sites);
 }
 
 bool ImportDives::workToBeDone()
diff --git a/core/divelist.c b/core/divelist.c
index 8c677498a..c6d1a7e31 100644
--- a/core/divelist.c
+++ b/core/divelist.c
@@ -1007,6 +1007,10 @@ void add_imported_dives(struct divelog *import_log, int flags)
 	current_dive = divelog.dives->nr > 0 ? divelog.dives->dives[divelog.dives->nr - 1] : NULL;
 
 	free_device_table(devices_to_add);
+	free(dives_to_add.dives);
+	free(dives_to_remove.dives);
+	free(trips_to_add.trips);
+	free(dive_sites_to_add.dive_sites);
 
 	/* Inform frontend of reset data. This should reset all the models. */
 	emit_reset_signal();