diff --git a/src/Composer/Command/InitCommand.php b/src/Composer/Command/InitCommand.php
index 75bc92dd2..b4ea4350d 100644
--- a/src/Composer/Command/InitCommand.php
+++ b/src/Composer/Command/InitCommand.php
@@ -530,6 +530,10 @@ EOT
             $io = $this->getIO();
 
             foreach ($requires as $requirement) {
+                if (isset($requirement['version']) && Preg::isMatch('{^\d+(\.\d+)?$}', $requirement['version'])) {
+                    $io->writeError('<warning>The "'.$requirement['version'].'" constraint for "'.$requirement['name'].'" appears too strict and will likely not match what you want. See https://getcomposer.org/constraints');
+                }
+
                 if (!isset($requirement['version'])) {
                     // determine the best version automatically
                     list($name, $version) = $this->findBestVersionAndNameForPackage($input, $requirement['name'], $platformRepo, $preferredStability, null, null, $fixed);