--- Libc/Libc-763.12/pthreads/Makefile.inc
+++ Libc/Libc-583/pthreads/Makefile.inc
@@ -6,8 +6,6 @@
 
 MISRCS += pthread_cancelable.c pthread_cond.c pthread_tsd.c pthread.c \
         pthread_mutex.c    thread_setup.c   stack.s pthread_rwlock.c
-
-DYLDSRCS += pthread.c pthread_mutex.c pthread_tsd.c
 
 .ifdef FEATURE_PLOCKSTAT
 ${SYMROOTINC}/plockstat.h: ${.CURDIR}/pthreads/plockstat.d
@@ -19,7 +17,7 @@
 .endfor
 .endif # FEATURE_PLOCKSTAT
 
-PTHREADS_INSTHDRS += pthread.h pthread_spis.h pthread_impl.h sched.h
+PTHREADS_INSTHDRS += pthread.h pthread_impl.h sched.h
 PTHREADS_INSTHDRS := ${PTHREADS_INSTHDRS:S/^/${.CURDIR}\/pthreads\//}
 INSTHDRS += ${PTHREADS_INSTHDRS}