diff --git a/modules/citation/slides-citation.md b/modules/citation/slides-citation.pmd
similarity index 100%
rename from modules/citation/slides-citation.md
rename to modules/citation/slides-citation.pmd
diff --git a/modules/fairsoftware/slides-fairsoftware.md b/modules/fairsoftware/slides-fairsoftware.pmd
similarity index 99%
rename from modules/fairsoftware/slides-fairsoftware.md
rename to modules/fairsoftware/slides-fairsoftware.pmd
index 8c39edf3..c2d8ae05 100644
--- a/modules/fairsoftware/slides-fairsoftware.md
+++ b/modules/fairsoftware/slides-fairsoftware.pmd
@@ -1,9 +1,3 @@
-# Presentation
-
-## Author
-
-### Date
-
 ---
 
 <!-- .slide: data-state="title" -->
diff --git a/modules/researchsoftware/slides-researchsoftware.md b/modules/researchsoftware/slides-researchsoftware.pmd
similarity index 100%
rename from modules/researchsoftware/slides-researchsoftware.md
rename to modules/researchsoftware/slides-researchsoftware.pmd
diff --git a/modules/researchsoftware/slides-software.md b/modules/researchsoftware/slides-software.pmd
similarity index 100%
rename from modules/researchsoftware/slides-software.md
rename to modules/researchsoftware/slides-software.pmd
diff --git a/modules/smp/slides-smp.md b/modules/smp/slides-smp.pmd
similarity index 100%
rename from modules/smp/slides-smp.md
rename to modules/smp/slides-smp.pmd