diff --git a/getid3/module.audio-video.riff.php b/getid3/module.audio-video.riff.php
index 256c8225..3de5e457 100644
--- a/getid3/module.audio-video.riff.php
+++ b/getid3/module.audio-video.riff.php
@@ -306,7 +306,8 @@ public function Analyze() {
 						// Keep only string as far as first null byte, discard rest of fixed-width data
 						// https://github.com/JamesHeinrich/getID3/issues/263
 						// https://github.com/JamesHeinrich/getID3/issues/430
-						$thisfile_riff_WAVE_bext_0[$bext_key] = explode("\x00", $thisfile_riff_WAVE_bext_0[$bext_key])[0];
+						$null_terminator_rows = explode("\x00", $thisfile_riff_WAVE_bext_0[$bext_key]);
+						$thisfile_riff_WAVE_bext_0[$bext_key] = $null_terminator_rows[0];
 					}
 
 					$thisfile_riff_WAVE_bext_0['origin_date']    =                              substr($thisfile_riff_WAVE_bext_0['data'], 320,  10);