diff --git a/README.md b/README.md
index cd68b54260bd7484606e06cd400d8b09cfa78ee8..790cf567f6d2b33a066a6d134fe68866f161c111 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ in the same directory as files that also belong to that entry. Parsers
 might also read information from these auxillary files. This way you can add more files
 to an entry, even if the respective parser/code might not directly support it.
 
-For gromos please provide at least the files from this table if applicable to your
+For GROMOS please provide at least the files from this table if applicable to your
 calculations (remember that you can provide more files if you want):
 
 
@@ -49,12 +49,12 @@ import sys
 from nomad.cli.parse import parse, normalize_all
 
 # match and run the parser
-backend = parse(sys.argv[1])
+archive = parse(sys.argv[1])
 # run all normalizers
-normalize_all(backend)
+normalize_all(archive)
 
 # get the 'main section' section_run as a metainfo object
-section_run = backend.resource.contents[0].section_run[0]
+section_run = archive.section_run[0]
 
 # get the same data as JSON serializable Python dict
 python_dict = section_run.m_to_dict()
@@ -76,3 +76,5 @@ pip install -e parser-gromos
 ```
 
 Running the parser now, will use the parser's Python code from the clone project.
+
+
diff --git a/metadata.yaml b/metadata.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..42cf0d9a0ff8ce9160b26c0f6dfdd2ff84db989e
--- /dev/null
+++ b/metadata.yaml
@@ -0,0 +1,7 @@
+codeLabel: GROMOS
+codeLabelStyle: All in capitals
+codeUrl: http://www.gromos.net/
+parserDirName: dependencies/parsers/gromos/
+parserGitUrl: https://gitlab.mpcdf.mpg.de/nomad-lab/parser-gromos
+parserSpecific: ''
+tableOfFiles: ''
diff --git a/metadata.yml b/metadata.yml
deleted file mode 100644
index 1889399a266862fe1a16936ab90e430a6435971d..0000000000000000000000000000000000000000
--- a/metadata.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-code-label: GROMOS
-code-label-style: All in capitals
-code-url: http://www.gromos.net/
-parser-dir-name: dependencies/parsers/gromos/
-parser-git-url: https://gitlab.mpcdf.mpg.de/nomad-lab/parser-gromos
-parser-specific: ''
-table-of-files: ''