diff --git a/README.md b/README.md
index 888aa97..5a43537 100644
--- a/README.md
+++ b/README.md
@@ -93,7 +93,7 @@ You may combine build instruction systems to your liking.
 However, Makefiles must contain a SRCPAT annotation comment as follows, where `<regex>` is a source pattern as above.
 
 ```Makefile
-#@SRCPAT <regex>
+#%SRCPAT% <regex>
 ```
 
 If there are multiple SRCPAT annotations, the lowermost one will be used.
diff --git a/build/autodoc.sh b/build/autodoc.sh
index 312e036..e199e5a 100755
--- a/build/autodoc.sh
+++ b/build/autodoc.sh
@@ -11,10 +11,10 @@ do_make() { # $1:DIR $2:MAKEFILE $3:OBJECT
   local object="$3"
 
   # check Makefile 'source pattern'
-  local srcpat="$(grep -E "^#@SRCPAT" "${dir}/${makefile}" | tail -n 1 | sed -r "s/^#@SRCPAT\s+//")"
+  local srcpat="$(grep -E "^#%SRCPAT%" "${dir}/${makefile}" | tail -n 1 | sed -r "s/^#%SRCPAT%\s+//")"
 
   if [ -z "${srcpat}" ]; then
-    echo -n "Empty source pattern, check '#@SRCPAT' annotation! "
+    echo -n "Empty source pattern, check '#%SRCPAT%' annotation! "
     return 1
 
   elif [[ "${object}" =~ ${srcpat} ]]; then
diff --git a/example_docs/simple md/Makefile b/example_docs/simple md/Makefile
index 5042f01..6902e49 100644
--- a/example_docs/simple md/Makefile	
+++ b/example_docs/simple md/Makefile	
@@ -1,4 +1,4 @@
-#@SRCPAT \.md$
+#%SRCPAT% \.md$
 
 .PHONY: all
 all: simple.pdf simple.html
diff --git a/example_docs/somedir/Makefile b/example_docs/somedir/Makefile
index 52668e7..a7b1d27 100644
--- a/example_docs/somedir/Makefile
+++ b/example_docs/somedir/Makefile
@@ -1,4 +1,4 @@
-#@SRCPAT (file|\.tex)$
+#%SRCPAT% (file|\.tex)$
 
 .PHONY: all
 all: files.txt
diff --git a/example_docs/somedir/a directory in space/Makefile b/example_docs/somedir/a directory in space/Makefile
index e435afe..b358204 100644
--- a/example_docs/somedir/a directory in space/Makefile	
+++ b/example_docs/somedir/a directory in space/Makefile	
@@ -1,4 +1,4 @@
-#@SRCPAT .*
+#%SRCPAT% .*
 
 .PHONY: all
 all: