diff --git a/application/Espo/Core/Select/Text/FullTextSearch/DefaultDataComposer.php b/application/Espo/Core/Select/Text/FullTextSearch/DefaultDataComposer.php
index 22ea37811b..6c1caa33ea 100644
--- a/application/Espo/Core/Select/Text/FullTextSearch/DefaultDataComposer.php
+++ b/application/Espo/Core/Select/Text/FullTextSearch/DefaultDataComposer.php
@@ -90,7 +90,8 @@ class DefaultDataComposer implements DataComposer
         if (
             mb_strpos($preparedFilter, ' ') === false &&
             mb_strpos($preparedFilter, '+') === false &&
-            mb_strpos($preparedFilter, '-') === false &&
+            mb_strpos($preparedFilter, ' -') === false &&
+            mb_strpos($preparedFilter, '-') !== 0 &&
             mb_strpos($preparedFilter, '*') === false
         ) {
             $mode = Mode::NATURAL_LANGUAGE;