Index: libcfa/src/Makefile.am
===================================================================
--- libcfa/src/Makefile.am	(revision edf3ff16dc4dada954dfc2b10d3eb56f09f3ec0f)
+++ libcfa/src/Makefile.am	(revision c920317584861b5ec954f091f900bd1c5aa59a72)
@@ -91,7 +91,5 @@
 # not all platforms support concurrency, add option do disable it
 inst_thread_headers_nosrc = \
-	bits/collection.hfa \
 	bits/random.hfa \
-	bits/sequence.hfa \
 	concurrency/clib/cfathread.h \
 	concurrency/invoke.h \