diff --git a/src/Symfony/Component/Yaml/Inline.php b/src/Symfony/Component/Yaml/Inline.php
index 44eb793261..f51b1af137 100644
--- a/src/Symfony/Component/Yaml/Inline.php
+++ b/src/Symfony/Component/Yaml/Inline.php
@@ -591,8 +591,11 @@ class Inline
                     case 0 === strpos($scalar, '!!binary '):
                         return self::evaluateBinaryScalar(substr($scalar, 9));
                     case preg_match('/^(-|\+)?[0-9][0-9,]*(\.[0-9_]+)?$/', $scalar):
-                        @trigger_error('Using the comma as a group separator for floats is deprecated since version 3.2 and will be removed in 4.0.', E_USER_DEPRECATED);
                     case preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
+                        if (false !== strpos($scalar, ',')) {
+                            @trigger_error('Using the comma as a group separator for floats is deprecated since version 3.2 and will be removed in 4.0.', E_USER_DEPRECATED);
+                        }
+
                         return (float) str_replace(array(',', '_'), '', $scalar);
                     case preg_match(self::getTimestampRegex(), $scalar):
                         if (Yaml::PARSE_DATETIME & $flags) {
diff --git a/src/Symfony/Component/Yaml/Tests/InlineTest.php b/src/Symfony/Component/Yaml/Tests/InlineTest.php
index 7f77b68c52..804e2b8c0a 100644
--- a/src/Symfony/Component/Yaml/Tests/InlineTest.php
+++ b/src/Symfony/Component/Yaml/Tests/InlineTest.php
@@ -292,6 +292,7 @@ class InlineTest extends \PHPUnit_Framework_TestCase
             array('"quoted string"', 'quoted string'),
             array("'quoted string'", 'quoted string'),
             array('12.30e+02', 12.30e+02),
+            array('123.45_67', 123.4567),
             array('0x4D2', 0x4D2),
             array('0x_4_D_2_', 0x4D2),
             array('02333', 02333),