diff --git a/config_defaults_inc.php b/config_defaults_inc.php
index 25d2459e25..ed57801c9e 100644
--- a/config_defaults_inc.php
+++ b/config_defaults_inc.php
@@ -101,7 +101,7 @@
 		# Remove /api/soap/ from the path to handle the case where the config_defaults_inc.php is included from the
 		# soap api.
 		$t_soap_api_path = '/api/soap';
-		$t_soap_api_path_pos = stripos( $t_path, $t_soap_api_path );
+		$t_soap_api_path_pos = strpos( strtolower( $t_path ), $t_soap_api_path );
 		if ( $t_soap_api_path_pos == ( strlen( $t_path ) - strlen( $t_soap_api_path ) ) ) {
 			$t_path = substr( $t_path, 0, $t_soap_api_path_pos );
 		}