diff --git a/AUTHORS b/AUTHORS
index eb623e40..c69e5e50 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -60,7 +60,7 @@ PEG from Guile
 mes/module/mes/peg/
 
 Pmatch from Guile
-mes/module/mes/pmatch.scm
+mes/module/system/base/pmatch.scm
 
 Pretty-print from Guile
 mes/module/mes/pretty-print.scm
diff --git a/mes/module/mes/pmatch.mes b/mes/module/mes/pmatch.mes
index 4f15bc3b..1ee8b0ee 100644
--- a/mes/module/mes/pmatch.mes
+++ b/mes/module/mes/pmatch.mes
@@ -25,4 +25,4 @@
 ;;(mes-use-module (mes guile))
 (mes-use-module (mes quasiquote))
 (mes-use-module (mes syntax))
-(include-from-path "mes/pmatch.scm")
+(include-from-path "system/base/pmatch.scm")
diff --git a/mes/module/mes/pmatch.scm b/mes/module/system/base/pmatch.scm
similarity index 100%
rename from mes/module/mes/pmatch.scm
rename to mes/module/system/base/pmatch.scm