diff --git a/composer.json b/composer.json
index 7a71cd87..08e25ef6 100644
--- a/composer.json
+++ b/composer.json
@@ -57,7 +57,7 @@
     "suggest": {
         "ext-mcrypt": "Install the Mcrypt extension in order to speed up a wide variety of cryptographic operations.",
         "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
-        "pear-pear/PHP_Compat": "Install PHP_Compat to get phpseclib working on PHP < 4.3.3."
+        "pear-pear/PHP_Compat": "Install PHP_Compat to get phpseclib working on PHP < 5.0.0."
     },
     "include-path": ["phpseclib/"],
     "autoload": {