diff --git a/tests/php.ini b/tests/php.ini
index a7a9ac23525c4a41d72aebc3e9bab522ba78875c..7527506aa1762c1afb0e07104cd721fa1fc0c4ee 100644
--- a/tests/php.ini
+++ b/tests/php.ini
@@ -2,6 +2,6 @@
 # default
 zend.assertions = 1
 
-# required by tests
+# required by tests; they asserts these exceptions
 assert.exception = 1