diff --git a/src/Symfony/Component/ExpressionLanguage/Lexer.php b/src/Symfony/Component/ExpressionLanguage/Lexer.php
index 48b15ffe7c23..95b90705dd32 100644
--- a/src/Symfony/Component/ExpressionLanguage/Lexer.php
+++ b/src/Symfony/Component/ExpressionLanguage/Lexer.php
@@ -42,7 +42,7 @@ public function tokenize($expression)
                 continue;
             }
 
-            if (preg_match('/[0-9]+(?:\.[0-9]+)?/A', $expression, $match, 0, $cursor)) {
+            if (preg_match('/[0-9]+(?:\.[0-9]+)?([Ee][\+\-][0-9]+)?/A', $expression, $match, 0, $cursor)) {
                 // numbers
                 $number = (float) $match[0];  // floats
                 if (preg_match('/^[0-9]+$/', $match[0]) && $number <= PHP_INT_MAX) {
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php
index eacfbbcd705b..2674752aa25c 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php
@@ -97,8 +97,10 @@ public function getTokenizeData()
                     new Token('punctuation', '[', 25),
                     new Token('number', '4', 26),
                     new Token('punctuation', ']', 27),
+                    new Token('operator', '-', 29),
+                    new Token('number', '1990', 31),
                 ],
-                '(3 + 5) ~ foo("bar").baz[4]',
+                '(3 + 5) ~ foo("bar").baz[4] - 1.99E+3',
             ],
             [
                 [new Token('operator', '..', 1)],