diff --git a/requirements.txt b/requirements.txt
index d4a185048..a0a1fb645 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ pyyaml>=5.1
 pyscal>=0.1.5
 matplotlib
 numpy
-ecl2df
+ecl2df<0.5.0
 configsuite
 six>=1.12.0
 xtgeo
diff --git a/src/subscript/convert_grid_format/convert_grid_format.py b/src/subscript/convert_grid_format/convert_grid_format.py
index 6877b1135..26dd27f77 100644
--- a/src/subscript/convert_grid_format/convert_grid_format.py
+++ b/src/subscript/convert_grid_format/convert_grid_format.py
@@ -21,17 +21,15 @@
 
 try:
     from ..version import version
+
     __version__ = version
 except ImportError:
     __version__ = "0.0.0"
 
 
-def _do_parse_args(args):
-
-    if args is None:
-        args = sys.argv[1:]
-    else:
-        args = args
+def get_parser():
+    """Setup an argparse argument parser for parsing arguments
+    and making documentation"""
 
     usetxt = "convert_grid_format ... "
 
@@ -86,6 +84,18 @@ def _do_parse_args(args):
         default=False,
         help="Use standard fmu name setting of file (no args)",
     )
+    return parser
+
+
+def _do_parse_args(args):
+    """Parse command line arguments"""
+
+    if args is None:
+        args = sys.argv[1:]
+    else:
+        args = args
+
+    parser = get_parser()
 
     if len(args) < 2:
         parser.print_help()
@@ -170,6 +180,7 @@ def _convert_ecl2roff(filename, mode, outfile, option, props, dates):
 
 
 def main(args=None):
+    """Entry-point"""
 
     XTGeoDialog.print_xtgeo_header(APPNAME, __version__)
 
diff --git a/tests/test_convert_grid_format.py b/tests/test_convert_grid_format.py
index f3133608c..aeaafd1de 100644
--- a/tests/test_convert_grid_format.py
+++ b/tests/test_convert_grid_format.py
@@ -13,8 +13,12 @@
 logger = xtg.basiclogger(__name__)
 
 
-RFILE1 = "tests/data/reek/eclipse/model/2_R001_REEK-0.EGRID"
-RFILE2 = "tests/data/reek/eclipse/model/2_R001_REEK-0.UNRST"
+RFILE1 = os.path.join(
+    os.path.dirname(__file__), "data/reek/eclipse/model/2_R001_REEK-0.EGRID"
+)
+RFILE2 = os.path.join(
+    os.path.dirname(__file__), "data/reek/eclipse/model/2_R001_REEK-0.UNRST"
+)
 
 
 def test_convert_grid_format_egrid(tmpdir):