diff --git a/plugins/ModelChecker/ModelChecker.py b/plugins/ModelChecker/ModelChecker.py
index 8a501ceb27..65d7c2e35d 100644
--- a/plugins/ModelChecker/ModelChecker.py
+++ b/plugins/ModelChecker/ModelChecker.py
@@ -63,11 +63,11 @@ class ModelChecker(QObject, Extension):
 
         self._caution_message.setText(catalog.i18nc(
             "@info:status",
-            "Some models may not be printed optimal due to object size and chosen material for models: {model_names}.\n"
+            "Some models may not be printed optimally due to object size and chosen material for models: {model_names}.\n"
             "Tips that may be useful to improve the print quality:\n"
-            "1) Use rounded corners\n"
-            "2) Turn the fan off (only if the are no tiny details on the model)\n"
-            "3) Use a different material").format(model_names = ", ".join([n.getName() for n in warning_nodes])))
+            "1) Use rounded corners.\n"
+            "2) Turn the fan off (only if there are no tiny details on the model).\n"
+            "3) Use a different material.").format(model_names = ", ".join([n.getName() for n in warning_nodes])))
 
         return len(warning_nodes) > 0