diff --git a/Libraries/LibPthread/Makefile b/Libraries/LibPthread/Makefile
index e004c952723..9c4df9351d6 100644
--- a/Libraries/LibPthread/Makefile
+++ b/Libraries/LibPthread/Makefile
@@ -2,6 +2,8 @@ OBJS = pthread.o
 
 LIBRARY = libpthread.a
 
+POST_LIBRARY_BUILD = $(QUIET) $(MAKE) install
+
 install:
 	mkdir -p $(SERENITY_BASE_DIR)/Root/usr/lib/
 	cp *.h $(SERENITY_BASE_DIR)/Root/usr/include/