diff --git a/libs.mk b/libs.mk
index d4a164d8c940e5ece82ab97bdc7a64104ba10b79..b63a8f64a43f82c3e15f17d375775be031537b4f 100644
--- a/libs.mk
+++ b/libs.mk
@@ -243,6 +243,7 @@ vpx.pc: config.mk libs.mk
 	$(qexec)echo 'Requires:' >> $@
 	$(qexec)echo 'Conflicts:' >> $@
 	$(qexec)echo 'Libs: -L$${libdir} -lvpx -lm' >> $@
+	$(qexec)echo 'Libs.private: -lpthread' >> $@
 	$(qexec)echo 'Cflags: -I$${includedir}' >> $@
 INSTALL-LIBS-yes += $(LIBSUBDIR)/pkgconfig/vpx.pc
 INSTALL_MAPS += $(LIBSUBDIR)/pkgconfig/%.pc %.pc