diff --git a/src/Symfony/Component/Config/Definition/BaseNode.php b/src/Symfony/Component/Config/Definition/BaseNode.php
index a49e0b0bdc86e..00aa212bdc404 100644
--- a/src/Symfony/Component/Config/Definition/BaseNode.php
+++ b/src/Symfony/Component/Config/Definition/BaseNode.php
@@ -507,35 +507,21 @@ private static function resolvePlaceholderValue($value)
         return $value;
     }
 
-    private static function getType($value): string
-    {
-        switch ($type = \gettype($value)) {
-            case 'boolean':
-                return 'bool';
-            case 'double':
-                return 'float';
-            case 'integer':
-                return 'int';
-        }
-
-        return $type;
-    }
-
     private function doValidateType($value): void
     {
-        if (null === $this->handlingPlaceholder || null === $value) {
-            $this->validateType($value);
-
-            return;
-        }
-
-        if (!$this->allowPlaceholders()) {
+        if (null !== $this->handlingPlaceholder && !$this->allowPlaceholders()) {
             $e = new InvalidTypeException(sprintf('A dynamic value is not compatible with a "%s" node type at path "%s".', get_class($this), $this->getPath()));
             $e->setPath($this->getPath());
 
             throw $e;
         }
 
+        if (null === $this->handlingPlaceholder || null === $value) {
+            $this->validateType($value);
+
+            return;
+        }
+
         $knownTypes = array_keys(self::$placeholders[$this->handlingPlaceholder]);
         $validTypes = $this->getValidPlaceholderTypes();
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php
index 1fe57f9db6cfb..09c83ce3bf2ee 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php
@@ -14,7 +14,6 @@
 use Symfony\Component\Config\Definition\BaseNode;
 use Symfony\Component\Config\Definition\Processor;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\DependencyInjection\Exception\LogicException;
 use Symfony\Component\DependencyInjection\Extension\ConfigurationExtensionInterface;
 use Symfony\Component\DependencyInjection\ParameterBag\EnvPlaceholderParameterBag;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
@@ -42,21 +41,20 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $defaultBag = new ParameterBag($container->getParameterBag()->all());
+        $defaultBag = new ParameterBag($resolvingBag->all());
         $envTypes = $resolvingBag->getProvidedTypes();
         try {
             foreach ($resolvingBag->getEnvPlaceholders() + $resolvingBag->getUnusedEnvPlaceholders() as $env => $placeholders) {
-                $prefix = (false === $i = strpos($env, ':')) ? 'string' : substr($env, 0, $i);
-                $types = $envTypes[$prefix] ?? array('string');
-                $default = ($hasEnv = (false === $i && $defaultBag->has("env($env)"))) ? $defaultBag->get("env($env)") : null;
-
-                if (null !== $default && !in_array($type = self::getType($default), $types, true)) {
-                    throw new LogicException(sprintf('Invalid type for env parameter "env(%s)". Expected "%s", but got "%s".', $env, implode('", "', $types), $type));
-                }
-
                 $values = array();
-                foreach ($types as $type) {
-                    $values[$type] = $hasEnv ? $default : self::$typeFixtures[$type] ?? null;
+                if (false === $i = strpos($env, ':')) {
+                    $default = $defaultBag->has("env($env)") ? $defaultBag->get("env($env)") : null;
+                    $defaultType = null !== $default ? self::getType($default) : 'string';
+                    $values[$defaultType] = $default;
+                } else {
+                    $prefix = substr($env, 0, $i);
+                    foreach ($envTypes[$prefix] ?? array('string') as $type) {
+                        $values[$type] = self::$typeFixtures[$type] ?? null;
+                    }
                 }
                 foreach ($placeholders as $placeholder) {
                     BaseNode::setPlaceholder($placeholder, $values);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
index bd554cd285901..9534b11a90bb2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
@@ -22,31 +22,31 @@
 
 class ValidateEnvPlaceholdersPassTest extends TestCase
 {
-    /**
-     * @expectedException \Symfony\Component\DependencyInjection\Exception\LogicException
-     * @expectedExceptionMessage Invalid type for env parameter "env(FOO)". Expected "string", but got "bool".
-     */
-    public function testDefaultEnvIsValidatedByType()
+    public function testEnvsAreValidatedInConfig()
     {
         $container = new ContainerBuilder();
-        $container->setParameter('env(FOO)', true);
-        $container->registerExtension(new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
-            'scalar_node' => '%env(FOO)%',
+        $container->setParameter('env(NULLED)', null);
+        $container->setParameter('env(FLOATISH)', 3.2);
+        $container->registerExtension($ext = new EnvExtension());
+        $container->prependExtensionConfig('env_extension', $expected = array(
+            'scalar_node' => '%env(NULLED)%',
+            'scalar_node_not_empty' => '%env(FLOATISH)%',
+            'int_node' => '%env(int:FOO)%',
+            'float_node' => '%env(float:BAR)%',
         ));
 
         $this->doProcess($container);
+
+        $this->assertSame($expected, $container->resolveEnvPlaceholders($ext->getConfig()));
     }
 
-    public function testEnvsAreValidatedInConfig()
+    public function testDefaultEnvWithoutPrefixIsValidatedInConfig()
     {
         $container = new ContainerBuilder();
-        $container->setParameter('env(NULLED)', null);
+        $container->setParameter('env(FLOATISH)', 3.2);
         $container->registerExtension($ext = new EnvExtension());
         $container->prependExtensionConfig('env_extension', $expected = array(
-            'scalar_node' => '%env(NULLED)%',
-            'int_node' => '%env(int:FOO)%',
-            'float_node' => '%env(float:BAR)%',
+            'float_node' => '%env(FLOATISH)%',
         ));
 
         $this->doProcess($container);
diff --git a/src/Symfony/Component/DependencyInjection/composer.json b/src/Symfony/Component/DependencyInjection/composer.json
index 8230395645c7c..12758018f22da 100644
--- a/src/Symfony/Component/DependencyInjection/composer.json
+++ b/src/Symfony/Component/DependencyInjection/composer.json
@@ -32,7 +32,7 @@
         "symfony/proxy-manager-bridge": "Generate service proxies to lazy load them"
     },
     "conflict": {
-        "symfony/config": "<4.1",
+        "symfony/config": "<4.1.1",
         "symfony/finder": "<3.4",
         "symfony/proxy-manager-bridge": "<3.4",
         "symfony/yaml": "<3.4"