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-rw-r--r--gtk2_ardour/automation_line.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/gtk2_ardour/automation_line.cc b/gtk2_ardour/automation_line.cc
index 263fe29b7b..5a7f6ddd21 100644
--- a/gtk2_ardour/automation_line.cc
+++ b/gtk2_ardour/automation_line.cc
@@ -830,7 +830,7 @@ AutomationLine::reset_callback (const Evoral::ControlList& events)
model_to_view_coord (tx, ty);
- if (isnan (tx) || isnan (ty)) {
+ if (std::isnan (tx) || std::isnan (ty)) {
warning << string_compose (_("Ignoring illegal points on AutomationLine \"%1\""),
_name) << endmsg;
continue;