diff --git a/composer.json b/composer.json
index 1b529a23..2217c219 100644
--- a/composer.json
+++ b/composer.json
@@ -28,8 +28,8 @@
         "php": ">=4.3.3"
     },
     "suggest": {
-        "ext-mcrypt": "*",
-        "ext-gmp": "*"
+        "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."
     },
     "include-path": ["phpseclib/"],
     "autoload": {