diff --git a/exec/Makefile.am b/exec/Makefile.am
index 8ea3be52..0da4d990 100644
--- a/exec/Makefile.am
+++ b/exec/Makefile.am
@@ -71,7 +71,7 @@ SHARED_LIBS		= $(lib_LIBRARIES:%.a=%.so.$(SONAME))
 SHARED_LIBS_SO		= $(SHARED_LIBS:%.so.$(SONAME)=%.so)
 SHARED_LIBS_SO_TWO	= $(SHARED_LIBS:%.so.$(SONAME)=%.so.$(SOMAJOR))
 
-noinst_HEADERS		= apidef.h crypto.h mainconfig.h main.h \
+noinst_HEADERS		= apidef.h crypto.h mainconfig.h main.h tsafe.h \
 			  quorum.h service.h sync.h timer.h tlist.h totemconfig.h \
 			  totemmrp.h totemnet.h totemudp.h totemiba.h totemrrp.h \
 			  totemsrp.h util.h vsf.h wthread.h schedwrk.h \