diff --git a/slides_template/Makefile b/slides_template/Makefile
index ac30864..4aa32cc 100644
--- a/slides_template/Makefile
+++ b/slides_template/Makefile
@@ -5,6 +5,9 @@ pdf: all
 
 %.pdf: %.tex 
 	rubber -fd $<
+	qpdf --qdf --object-streams=disable $@ - | sponge $@
+	sed -e 's|/PageLabels|/BageLapels|g' < $@ |sponge $@
+	qpdf $@ - | sponge $@
 
 # by default, we produce combined notes/slides output
 notes.config:
@@ -23,7 +26,7 @@ slides: slides-config pdf
 viewpdf: all
 	evince *.pdf
 
-pdfpc: notes.config
+pdfpc: notes.config pdf
 	pdfpc -n right *pdf
 
 spell: