diff --git a/lisa/trace.py b/lisa/trace.py
index e27c9333e295e3b782980a34b42cfe01a0b638b9..647d347b0889f9d4cdfa18d94d15ab5e85fc1eca 100644
--- a/lisa/trace.py
+++ b/lisa/trace.py
@@ -1910,7 +1910,7 @@ class HRTxtTraceParser(SimpleTxtTraceParser):
         ),
     }
 
-    HEADER_REGEX = r'(?P<__comm>.+)-(?P<__pid>\d+)\s*\[(?P<__cpu>\d*)\].*(?P<__timestamp>\d+\.\d+): +(?P<__event>\w+):'
+    HEADER_REGEX = r'(?P<__comm>.+)-(?P<__pid>\d+)[^[]*\[(?P<__cpu>\d*)\].*(?P<__timestamp>\d+\.\d+): +(?P<__event>\w+):'
 
 
 class SysTraceParser(HRTxtTraceParser):