diff --git a/health-daemon/pvchealthd/objects/MonitoringInstance.py b/health-daemon/pvchealthd/objects/MonitoringInstance.py
index 54503740..4da5f722 100644
--- a/health-daemon/pvchealthd/objects/MonitoringInstance.py
+++ b/health-daemon/pvchealthd/objects/MonitoringInstance.py
@@ -695,7 +695,7 @@ class MonitoringInstance(object):
             health_text = f"{health_colour}{self.this_node.health}%{self.logger.fmt_end} node health"
             result_text.append(health_text)
         else:
-            health_text = "{self.logger.fmt_blue}N/A{self.logger.fmt_end} node health"
+            health_text = f"{self.logger.fmt_blue}N/A{self.logger.fmt_end} node health"
             result_text.append(health_text)
 
         self.logger.out(