diff --git a/MANIFEST.in b/MANIFEST.in
index 919e3517..450f48c8 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -14,6 +14,7 @@ include .dockerignore
 # tests
 include pytest.ini
 recursive-include tests *.jpg
+recursive-include tests *.png
 recursive-include tests *.pdf
 recursive-include tests *.py
 recursive-include tests *.rst
diff --git a/RELEASE_NOTES.rst b/RELEASE_NOTES.rst
index 0d9d7e26..46f29cf1 100644
--- a/RELEASE_NOTES.rst
+++ b/RELEASE_NOTES.rst
@@ -3,6 +3,12 @@ RELEASE NOTES
 
 OCRmyPDF uses `semantic versioning <http://semver.org/>`_.
 
+v4.3.4:
+=======
+
+-  Fixed "decimal.InvalidOperation: quantize result has too many digits" for high DPI images
+
+
 v4.3.3:
 =======
 
diff --git a/ocrmypdf/ghostscript.py b/ocrmypdf/ghostscript.py
index ee1b5bad..f724ebad 100644
--- a/ocrmypdf/ghostscript.py
+++ b/ocrmypdf/ghostscript.py
@@ -2,7 +2,7 @@
 # © 2015 James R. Barlow: github.com/jbarlow83
 
 from tempfile import NamedTemporaryFile
-from subprocess import Popen, PIPE, check_call
+from subprocess import Popen, PIPE, STDOUT, check_call
 from shutil import copy
 from . import get_program
 from .pdfa import SRGB_ICC_PROFILE
@@ -25,16 +25,13 @@ def rasterize_pdf(input_file, output_file, xres, yres, raster_device, log,
             input_file
         ]
 
-        p = Popen(args_gs, close_fds=True, stdout=PIPE, stderr=PIPE,
+        p = Popen(args_gs, close_fds=True, stdout=PIPE, stderr=STDOUT,
                   universal_newlines=True)
-        stdout, stderr = p.communicate()
-        if stdout:
-            if 'error' in stdout:
-                log.error(stdout)  # Ghostscript puts errors in stdout
-            else:
-                log.debug(stdout)
-        if stderr:
-            log.error(stderr)
+        stdout, _ = p.communicate()
+        if 'error' in stdout:
+            log.error(stdout)  # Ghostscript puts errors in stdout
+        else:
+            log.debug(stdout)
 
         if p.returncode == 0:
             copy(tmp.name, output_file)
@@ -60,24 +57,22 @@ def generate_pdfa(pdf_pages, output_file, log, threads=1):
             "-sOutputFile=" + gs_pdf.name,
         ]
         args_gs.extend(pdf_pages)
-        p = Popen(args_gs, close_fds=True, stdout=PIPE, stderr=PIPE,
+        p = Popen(args_gs, close_fds=True, stdout=PIPE, stderr=STDOUT,
                   universal_newlines=True)
-        stdout, stderr = p.communicate()
-        if stdout:
-            if 'error' in stdout:
-                log.error(stdout)
-            elif 'overprint mode not set' in stdout:
-                # Unless someone is going to print PDF/A documents on a
-                # magical sRGB printer I can't see the removal of overprinting
-                # being a problem....
-                log.debug(
-                    "Ghostscript had to remove PDF 'overprinting' from the "
-                    "input file to complete PDF/A conversion. "
-                    )
-            else:
-                log.debug(stdout)
-        if stderr:
-            log.error(stderr)
+        stdout, _ = p.communicate()
+
+        if 'error' in stdout:
+            log.error(stdout)
+        elif 'overprint mode not set' in stdout:
+            # Unless someone is going to print PDF/A documents on a
+            # magical sRGB printer I can't see the removal of overprinting
+            # being a problem....
+            log.debug(
+                "Ghostscript had to remove PDF 'overprinting' from the "
+                "input file to complete PDF/A conversion. "
+                )
+        else:
+            log.debug(stdout)
 
         if p.returncode == 0:
             # Ghostscript does not change return code when it fails to create
diff --git a/tests/test_main.py b/tests/test_main.py
index 41dd81c1..7b9f5dc5 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -60,6 +60,7 @@ def check_ocrmypdf(input_basename, output_basename, *args, env=None):
     output_file = _outfile(output_basename)
 
     p, out, err = run_ocrmypdf(input_basename, output_basename, *args, env=env)
+    print(err)  # ensure py.test collects the output, use -s to view
     if p.returncode != 0:
         print('stdout\n======')
         print(out)