diff --git a/src/Beispiel_Protokoll.md b/src/Beispiel_Protokoll.prot.md
similarity index 100%
rename from src/Beispiel_Protokoll.md
rename to src/Beispiel_Protokoll.prot.md
diff --git a/src/lev-protokoll.mk b/src/lev-protokoll.mk
index 6d8a472..0f8e14f 100644
--- a/src/lev-protokoll.mk
+++ b/src/lev-protokoll.mk
@@ -1,4 +1,4 @@
-#%SRCPAT% \.md
+#%SRCPAT% \.prot\.md
 
 ############
 # Settings #
@@ -14,13 +14,13 @@ suffixInt := _intern
 
 suffixSubst = $(patsubst %.$(2),%$(4).$(3),$(1))
 
-mdFiles     := $(wildcard *.md)
+mdFiles     := $(wildcard *.prot.md)
 
-pdfFilesPub := $(call suffixSubst,$(mdFiles),md,pdf,$(suffixPub))
-texFilesPub := $(call suffixSubst,$(mdFiles),md,tex,$(suffixPub))
+pdfFilesPub := $(call suffixSubst,$(mdFiles),prot.md,pdf,$(suffixPub))
+texFilesPub := $(call suffixSubst,$(mdFiles),prot.md,tex,$(suffixPub))
 
-pdfFilesInt := $(call suffixSubst,$(mdFiles),md,pdf,$(suffixInt))
-texFilesInt := $(call suffixSubst,$(mdFiles),md,tex,$(suffixInt))
+pdfFilesInt := $(call suffixSubst,$(mdFiles),prot.md,pdf,$(suffixInt))
+texFilesInt := $(call suffixSubst,$(mdFiles),prot.md,tex,$(suffixInt))
 
 .PHONY: all pdf pdfPub pdfInt tex texPub texInt
 all: pdf
@@ -82,16 +82,16 @@ md2pdfa = $(call md2pdf,$(1),-) | $(call convert_pdfa,-,$(2))
 
 # pdf
 
-%$(suffixPub).pdf: %.md lev-shorthands.sty
+%$(suffixPub).pdf: %.prot.md lev-shorthands.sty
 	python3 /opt/lenaisten/redact.py $< | $(call md2pdfa,-,$@)
 
-%$(suffixInt).pdf: %.md lev-shorthands.sty
+%$(suffixInt).pdf: %.prot.md lev-shorthands.sty
 	python3 /opt/lenaisten/redact.py -i $< | $(call md2pdfa,-,$@)
 
 # tex
 
-%$(suffixPub).tex: %.md lev-shorthands.sty
+%$(suffixPub).tex: %.prot.md lev-shorthands.sty
 	python3 /opt/lenaisten/redact.py $< | $(call compile_md,latex,-,$@)
 
-%$(suffixInt).tex: %.md lev-shorthands.sty
+%$(suffixInt).tex: %.prot.md lev-shorthands.sty
 	python3 /opt/lenaisten/redact.py -i $< | $(call compile_md,latex,-,$@)