diff --git a/source/Makefile b/source/Makefile
index f8ab658a7f98a61c0bb02a7711eca64fcfd23743..59d6f592a1f52bba988732ded4c3319056927dad 100644
--- a/source/Makefile
+++ b/source/Makefile
@@ -43,6 +43,7 @@ install: package clean
 	$(call say,copying files to $(POLYPKGDIR))
 	@cp -r . $(POLYPKGDIR)
 	@rm -f $(POLYPKGDIR)/Makefile
+	@texhash || mktexlsr
 	$(call installed,$(POLYPKGDIR))
 
 clean: