diff --git a/.editorconfig b/.editorconfig
index 5df5fd3..6a92c81 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -3,7 +3,7 @@ root = true
 
 [*]
 indent_style = space
-indent_size = 2
+indent_size = 4
 end_of_line = lf
 charset = utf-8
 #trim_trailing_whitespace = true
diff --git a/src/Httpful/Curl/MultiCurl.php b/src/Httpful/Curl/MultiCurl.php
index f711705..dc50081 100644
--- a/src/Httpful/Curl/MultiCurl.php
+++ b/src/Httpful/Curl/MultiCurl.php
@@ -224,11 +224,12 @@ public function start()
             }
         }
 
+        $active = null;
         do {
             // Wait for activity on any curl_multi connection when curl_multi_select (libcurl) fails to correctly block.
             // https://bugs.php.net/bug.php?id=63411
-            if (\curl_multi_select($this->multiCurl) === -1) {
-                \usleep(100000);
+            if ($active && \curl_multi_select($this->multiCurl) === -1) {
+                \usleep(250);
             }
 
             \curl_multi_exec($this->multiCurl, $active);