diff --git a/easybuild/easyblocks/generic/rpackage.py b/easybuild/easyblocks/generic/rpackage.py
index bb7e6715eb..6ca009de95 100644
--- a/easybuild/easyblocks/generic/rpackage.py
+++ b/easybuild/easyblocks/generic/rpackage.py
@@ -183,7 +183,7 @@ def check_install_output(self, output):
         """
         Check output of installation command, and clean up installation if needed.
         """
-        errors = re.findall(r"^ERROR:.*", output, flags=re.I|re.M)
+        errors = re.findall(r"^ERROR:.*", output, flags=re.I | re.M)
 
         if errors:
             self.log.info("R package %s failed with error:\n%s", self.name, '\n'.join(errors))