diff --git a/tools/build/mk/OptionalObsoleteFiles.inc b/tools/build/mk/OptionalObsoleteFiles.inc
index 35ee7d09424..0b8d9409358 100644
--- a/tools/build/mk/OptionalObsoleteFiles.inc
+++ b/tools/build/mk/OptionalObsoleteFiles.inc
@@ -1505,6 +1505,7 @@ OLD_LIBS+=lib/libdtrace.so.2
 OLD_FILES+=usr/bin/ctfconvert
 OLD_FILES+=usr/bin/ctfdump
 OLD_FILES+=usr/bin/ctfmerge
+OLD_FILES+=usr/lib/dtrace/cam.d
 OLD_FILES+=usr/lib/dtrace/drti.o
 OLD_FILES+=usr/lib/dtrace/errno.d
 OLD_FILES+=usr/lib/dtrace/io.d