diff --git a/Preservation-Plan-en.md b/Preservation-Plan-en.md
index 71b64e5..4cc42f9 100644
--- a/Preservation-Plan-en.md
+++ b/Preservation-Plan-en.md
@@ -8,7 +8,7 @@ Tethys RDR offers a user-friendly interface that simplifies metadata entry and r
 
 After publication, submitters cannot update their data files or metadata without the involvement of Tethys RDR staff. The curation process ensures that any updates made to the dataset are properly reviewed, approved, and documented, thereby maintaining the accuracy and integrity of the repository's contents. Major changes to the file(s), title, or creators result in a new version that cannot be published without undergoing another curation process. The new and the previous dataset are cross-referenced in their respective descriptive metadata. To conveniently track the different versions of a dataset, the Tethys RDR frontend provides also a drop-down menu where you can view and select from all available versions of the dataset. The original DOI of the published dataset will always lead to the latest version.
 
-The actual data objects in Tethys are stored as “data series” (a series of data points in numerical, date/time, string or binary form). Each data entry in a data series refers to metadata about the object:
+The actual data objects in Tethys are stored as data series (a series of data points in numerical, date/time, string or binary form). Each data entry in a data series refers to metadata about the object:
 
     type of data point (numeric, date, string, binary file)
     responsible scientist (PI)
@@ -23,7 +23,7 @@ Not all of Tethys’s data is provided in tabular form. Some datasets are only a
     images: JPEG, PNG, TIFF
     documents: PDF-A (preferred), ODF, OOXML
     media containers: 
-    NetCDF, preferably using “Climate and Forecast Metadata Conventions” - in all other cases detailed documentation is required
+    NetCDF, preferably using Climate and Forecast Metadata Conventions - in all other cases detailed documentation is required
     Geopackage, preferably used for geospatial Data
 
 This list is not complete, Tethys may add more formats to this list. If any of those formats get deprecated or replaced by later standards, Tethys will do its best to transform these to modern replacements, but still keep the original data available.