diff --git a/src/rosbags/typesys/idl.py b/src/rosbags/typesys/idl.py
index acc6bafa..b9542272 100644
--- a/src/rosbags/typesys/idl.py
+++ b/src/rosbags/typesys/idl.py
@@ -34,7 +34,8 @@ definition
   / type_dcl ';'
 
 comment
-  = r'[/][/][^\n]*'
+  = r'/\*.*?\*/'
+  / r'[/][/][^\n]*'
 
 macro
   = ifndef