diff --git a/debian/upstream/metadata b/debian/upstream/metadata
index a45a187..ff94fe7 100644
--- a/debian/upstream/metadata
+++ b/debian/upstream/metadata
@@ -12,7 +12,7 @@
    ePrint: http://nar.oxfordjournals.org/content/26/2/544.full.pdf+html
  - Author: >
     David R. Kelley and Bo Liu and Arthur L. Delcher and Mihai Pop and
-    Steven L. Salzberg 
+    Steven L. Salzberg
    Journal: Nucleic Acids Research
    Year: 2012
    Volume: 40
@@ -22,12 +22,12 @@
     Gene prediction with Glimmer for metagenomic sequences augmented by
     classification and clustering.
    PMID: 22102569
-   DOI: 10.1093/nar/gkr1067 
+   DOI: 10.1093/nar/gkr1067
    ePrint: https://academic.oup.com/nar/article-pdf/40/1/e9/16964042/gkr1067.pdf
    URL: https://academic.oup.com/nar/article/40/1/e9/1270026
  - Auuthor: >
     Arthur L. Delcher and Kirsten A. Bratke and Edwin C. Powers and
-    Steven L. Salzberg 
+    Steven L. Salzberg
    Journal: Bioinformatics
    Year: 2007
    Month: 3
@@ -35,9 +35,9 @@
    Volume: 23
    Number: 6
    Pages: 673-679
-   Title: Identifying bacterial genes and endosymbiont DNA with Glimmer.
+   Title: Identifying bacterial genes and endosymbiont DNA with Glimmer
    PMID: 17237039
-   DOI: 10.1093/bioinformatics/btm009 
+   DOI: 10.1093/bioinformatics/btm009
 Registry:
  - Name: OMICtools
    Entry: OMICS_01486