diff --git a/kindlecomicconverter/comic2ebook.py b/kindlecomicconverter/comic2ebook.py
index 7ff7d97..049e44c 100755
--- a/kindlecomicconverter/comic2ebook.py
+++ b/kindlecomicconverter/comic2ebook.py
@@ -631,7 +631,7 @@ def getWorkFolder(afile):
                 path = cbx.extract(workdir)
             except OSError as e:
                 rmtree(workdir, True)
-                raise UserWarning(e.strerror)
+                raise UserWarning(e)
     else:
         raise UserWarning("Failed to open source file/directory.")
     sanitizePermissions(path)
diff --git a/kindlecomicconverter/metadata.py b/kindlecomicconverter/metadata.py
index 9d60616..51ade3b 100644
--- a/kindlecomicconverter/metadata.py
+++ b/kindlecomicconverter/metadata.py
@@ -46,7 +46,7 @@ class MetadataParser:
                 self.rawdata = cbx.extractMetadata()
                 self.format = cbx.type
             except OSError as e:
-                raise UserWarning(e.strerror)
+                raise UserWarning(e)
         if self.rawdata:
             self.parseXML()
 
@@ -121,5 +121,5 @@ class MetadataParser:
                 cbx = comicarchive.ComicArchive(self.source)
                 cbx.addFile(tmpXML)
             except OSError as e:
-                raise UserWarning(e.strerror)
+                raise UserWarning(e)
             rmtree(workdir)