diff --git a/src/Composer/Autoload/AutoloadGenerator.php b/src/Composer/Autoload/AutoloadGenerator.php
index ef29d4aad..13708693a 100644
--- a/src/Composer/Autoload/AutoloadGenerator.php
+++ b/src/Composer/Autoload/AutoloadGenerator.php
@@ -735,8 +735,10 @@ EXT_CHECKS;
 \$issues = array();
 ${requiredPhp}${requiredExtensions}
 if (\$issues) {
-    echo 'Composer detected issues in your platform:' . "\\n\\n" . implode("\\n", \$issues) . "\\n\\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', \$issues),
+        E_USER_ERROR
+    );
 }
 
 PLATFORM_CHECK;
diff --git a/tests/Composer/Test/Autoload/Fixtures/platform/no_extensions_required.php b/tests/Composer/Test/Autoload/Fixtures/platform/no_extensions_required.php
index de185cfca..188c0fae4 100644
--- a/tests/Composer/Test/Autoload/Fixtures/platform/no_extensions_required.php
+++ b/tests/Composer/Test/Autoload/Fixtures/platform/no_extensions_required.php
@@ -9,6 +9,8 @@ if (!(PHP_VERSION_ID >= 70200)) {
 }
 
 if ($issues) {
-    echo 'Composer detected issues in your platform:' . "\n\n" . implode("\n", $issues) . "\n\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', $issues),
+        E_USER_ERROR
+    );
 }
diff --git a/tests/Composer/Test/Autoload/Fixtures/platform/no_php_required.php b/tests/Composer/Test/Autoload/Fixtures/platform/no_php_required.php
index c0fcf897f..ee7d8cacd 100644
--- a/tests/Composer/Test/Autoload/Fixtures/platform/no_php_required.php
+++ b/tests/Composer/Test/Autoload/Fixtures/platform/no_php_required.php
@@ -13,6 +13,8 @@ if ($missingExtensions) {
 }
 
 if ($issues) {
-    echo 'Composer detected issues in your platform:' . "\n\n" . implode("\n", $issues) . "\n\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', $issues),
+        E_USER_ERROR
+    );
 }
diff --git a/tests/Composer/Test/Autoload/Fixtures/platform/no_php_upper_bound.php b/tests/Composer/Test/Autoload/Fixtures/platform/no_php_upper_bound.php
index de185cfca..188c0fae4 100644
--- a/tests/Composer/Test/Autoload/Fixtures/platform/no_php_upper_bound.php
+++ b/tests/Composer/Test/Autoload/Fixtures/platform/no_php_upper_bound.php
@@ -9,6 +9,8 @@ if (!(PHP_VERSION_ID >= 70200)) {
 }
 
 if ($issues) {
-    echo 'Composer detected issues in your platform:' . "\n\n" . implode("\n", $issues) . "\n\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', $issues),
+        E_USER_ERROR
+    );
 }
diff --git a/tests/Composer/Test/Autoload/Fixtures/platform/replaced_provided_exts.php b/tests/Composer/Test/Autoload/Fixtures/platform/replaced_provided_exts.php
index 5d94c0d22..c530dc59d 100644
--- a/tests/Composer/Test/Autoload/Fixtures/platform/replaced_provided_exts.php
+++ b/tests/Composer/Test/Autoload/Fixtures/platform/replaced_provided_exts.php
@@ -12,6 +12,8 @@ if ($missingExtensions) {
 }
 
 if ($issues) {
-    echo 'Composer detected issues in your platform:' . "\n\n" . implode("\n", $issues) . "\n\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', $issues),
+        E_USER_ERROR
+    );
 }
diff --git a/tests/Composer/Test/Autoload/Fixtures/platform/specific_php_release.php b/tests/Composer/Test/Autoload/Fixtures/platform/specific_php_release.php
index ac1d729f9..5a2d6dfed 100644
--- a/tests/Composer/Test/Autoload/Fixtures/platform/specific_php_release.php
+++ b/tests/Composer/Test/Autoload/Fixtures/platform/specific_php_release.php
@@ -9,6 +9,8 @@ if (!(PHP_VERSION_ID >= 70208)) {
 }
 
 if ($issues) {
-    echo 'Composer detected issues in your platform:' . "\n\n" . implode("\n", $issues) . "\n\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', $issues),
+        E_USER_ERROR
+    );
 }
diff --git a/tests/Composer/Test/Autoload/Fixtures/platform/typical.php b/tests/Composer/Test/Autoload/Fixtures/platform/typical.php
index 3f4e1ac78..ba33b7aeb 100644
--- a/tests/Composer/Test/Autoload/Fixtures/platform/typical.php
+++ b/tests/Composer/Test/Autoload/Fixtures/platform/typical.php
@@ -17,6 +17,8 @@ if ($missingExtensions) {
 }
 
 if ($issues) {
-    echo 'Composer detected issues in your platform:' . "\n\n" . implode("\n", $issues) . "\n\n";
-    exit(104);
+    trigger_error(
+        'Composer detected issues in your platform: ' . implode(', ', $issues),
+        E_USER_ERROR
+    );
 }