diff --git a/pdfa.sh b/pdfa.sh
index a33f3b2..1d9e092 100755
--- a/pdfa.sh
+++ b/pdfa.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 # Use this script to convert random PDFs to PDF/A (e.g. figures).
-# Unfortunately, ghostscript can not retain the PDF/A metadata. In result, if
+# Unfortunately, ghostscript cannot retain the PDF/A metadata. In result, if
 # you use this on the thesis, it _will_ become PDF/A compliant (and SIS will
 # accept it), but won't contain the magic PDF/A "stamp" and will show only as
 # normal PDF-1.4. :(
@@ -17,7 +17,7 @@ gs -dPDFA=1 \
 # Notes:
 #
 # PDFACompatibilityPolicy=3 actually doesn't exist. A bug in ghostscript
-# interprets is as something between 1 and 2, without unnecessary failing on
+# interprets it as something between 1 and 2, without unnecessarily failing on
 # various dumb errors.
 #
 # Add -dNoOutputFonts if you absolutely totally need to get rid of fonts in a