diff --git a/ext/pcntl/pcntl.c b/ext/pcntl/pcntl.c
index adb94af2fb463..16f29d419e3da 100644
--- a/ext/pcntl/pcntl.c
+++ b/ext/pcntl/pcntl.c
@@ -1277,6 +1277,8 @@ PHP_FUNCTION(pcntl_rfork)
 		default:
 			php_error_docref(NULL, E_WARNING, "Error %d", errno);
 		}
+	} else if (pid == 0) {
+		zend_max_execution_timer_init();
 	}
 
 	RETURN_LONG((zend_long) pid);
@@ -1320,6 +1322,8 @@ PHP_FUNCTION(pcntl_forkx)
 		default:
 			php_error_docref(NULL, E_WARNING, "Error %d", errno);
 		}
+	} else if (pid == 0) {
+		zend_max_execution_timer_init();
 	}
 
 	RETURN_LONG((zend_long) pid);