diff --git a/src/FastExcelWriter/Writer/Writer.php b/src/FastExcelWriter/Writer/Writer.php
index ac560bc..5cecea1 100644
--- a/src/FastExcelWriter/Writer/Writer.php
+++ b/src/FastExcelWriter/Writer/Writer.php
@@ -1071,7 +1071,7 @@ protected function _writeSheetHead(Sheet $sheet): FileWriter
 
         $sheetFormatPr = $sheet->getSheetFormatPr();
         if ($sheetFormatPr) {
-            $fileWriter->write('<sheetFormatPr ') . self::tagAttributes($sheetFormatPr) . '/>';
+            $fileWriter->write('<sheetFormatPr ' . self::tagAttributes($sheetFormatPr) . '/>');
         }
 
         $cols = $sheet->getColAttributes();