diff --git a/Tools/FilePeeker/src/BSFilePeeker.cxx b/Tools/FilePeeker/src/BSFilePeeker.cxx
index 969dde77ed4ec34d5a72eb43ee7277737bc3e10a..8ed6de269d14c470e81ea965cd562b7fc25a67c8 100644
--- a/Tools/FilePeeker/src/BSFilePeeker.cxx
+++ b/Tools/FilePeeker/src/BSFilePeeker.cxx
@@ -6,7 +6,17 @@
 #include <iostream>
 #include <string>
 #include <unistd.h>
+// Suppress a gcc8 warning from boost.
+// (Binaries apparently include boost with -I rather than -isystem.)
+// Fixed in boost 1.68 (see https://github.com/boostorg/mpl/issues/31)
+#ifdef __GNUC__
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wparentheses"
+#endif
 #include "EventStorage/pickDataReader.h"
+#ifdef __GNUC__
+# pragma GCC diagnostic pop
+#endif
 #include "FileMetaData.h"
 
 class BSFilePeeker {