diff --git a/salt/reactor/fleet.sls b/salt/reactor/fleet.sls
index 609806de8..4b09abe0a 100644
--- a/salt/reactor/fleet.sls
+++ b/salt/reactor/fleet.sls
@@ -82,7 +82,7 @@ def run():
       
         # Update the Fleet host in the static pillar
       for line in fileinput.input(STATICFILE, inplace=True):
-        line = re.sub(r'fleet_custom_hostname: \S*', f"fleet_custom_hostname: {CUSTOMHOSTNAME}", line.rstrip())
+        line = re.sub(r'fleet_custom_hostname:.*\n', f"fleet_custom_hostname: {CUSTOMHOSTNAME}", line.rstrip())
         print(line)  
 
   return {}