diff --git a/administrator/components/com_jedchecker/language/en-GB/en-GB.com_jedchecker.ini b/administrator/components/com_jedchecker/language/en-GB/en-GB.com_jedchecker.ini
index 0fac074..88c4545 100644
--- a/administrator/components/com_jedchecker/language/en-GB/en-GB.com_jedchecker.ini
+++ b/administrator/components/com_jedchecker/language/en-GB/en-GB.com_jedchecker.ini
@@ -96,7 +96,7 @@ COM_JEDCHECKER_LANG_TRANSLATION_EMPTY="Empty translation string"
 COM_JEDCHECKER_LANG_QQ_DEPRECATED="Usage of \"_QQ_\" is deprecated since Joomla! 3.9. Use escaped double quotes (\\\") instead"
 COM_JEDCHECKER_LANG_UNESCAPED_QUOTE="Unescaped double quotation mark found"
 COM_JEDCHECKER_LANG_VARIABLE_REF="A variable reference found in the translation string."
-COM_JEDCHECKER_LANG_RECOMMEND_ARGNUM="Placeholders may have another order in some languages. To simplify work of translators, it's recommended to use argnum specification (e.g. '%1$s'), see https://www.php.net/manual/en/function.sprintf.php for details"
+COM_JEDCHECKER_LANG_INCORRECT_ARGNUM="Probably you use incorrect placeholder format (e.g. '%1s' instead of '%1$s'), see <a href='https://www.php.net/manual/en/function.sprintf.php'>printf's argnum format specification</a> for details"
 COM_JEDCHECKER_TOOLBAR_CHECK="Check"
 COM_JEDCHECKER_TOOLBAR_CLEAR="Clear"
 COM_JEDCHECKER_CLICK_TO_VIEW_DETAILS="Click to View Details"
diff --git a/administrator/components/com_jedchecker/libraries/rules/language.php b/administrator/components/com_jedchecker/libraries/rules/language.php
index eec3725..5287f00 100644
--- a/administrator/components/com_jedchecker/libraries/rules/language.php
+++ b/administrator/components/com_jedchecker/libraries/rules/language.php
@@ -229,16 +229,28 @@ class JedcheckerRulesLanguage extends JEDcheckerRule
 				$this->report->addWarning($file, JText::_('COM_JEDCHECKER_LANG_VARIABLE_REF'), $startLineno, $line);
 			}
 
-			// Count %... formats in the string
-			$countAll = preg_match_all('/(?<=^|[^%])%(?=[-+0 ]?\w)/', $value);
+			// The code below detects incorrect format of numbered placeholders (e.g. "%1s" instead of "%1$s")
 
-			// Count %n$... (argnum) formats in the string
-			$countArgnum = preg_match_all('/(?<=^|[^%])%\d+\$/', $value);
+			// Count numbered placeholders in the string (e.g. "%1s")
+			$count = preg_match_all('/(?<=^|[^%])%(\d+)\w/', $value, $matches);
 
-			if ($countAll > 1 && $countArgnum < $countAll)
+			if ($count)
 			{
-				// @todo It's not mentioned in docs
-				$this->report->addInfo($file, JText::_('COM_JEDCHECKER_LANG_RECOMMEND_ARGNUM'), $startLineno, $line);
+				// To avoid false-positives (e.g. %10s for a ten-characters-wide output string in a CLI),
+				// we check that placeholder numbers form a sequence from 1 to N.
+
+				$maxNumber = 0;
+
+				foreach ($matches as $match)
+				{
+					$maxNumber = max($maxNumber, (int) $match[1]);
+				}
+
+				// If placeholder numbers form a sequence, the maximal value is equal to the number of elements
+				if ($maxNumber === $count)
+				{
+					$this->report->addWarning($file, JText::_('COM_JEDCHECKER_LANG_INCORRECT_ARGNUM'), $startLineno, $line);
+				}
 			}
 		}