diff --git a/dbms/src/Functions/trim.cpp b/dbms/src/Functions/trim.cpp
index 81916604d63..46f69530005 100644
--- a/dbms/src/Functions/trim.cpp
+++ b/dbms/src/Functions/trim.cpp
@@ -85,7 +85,7 @@ private:
             char_data += num_chars;
         }
 
-        if constexpr (mode::trim_left)
+        if constexpr (mode::trim_right)
         {
             const char * found = find_last_not_symbols_or_null<' '>(char_data, char_end);
             if (found)
diff --git a/dbms/tests/queries/0_stateless/00997_trim.reference b/dbms/tests/queries/0_stateless/00997_trim.reference
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/dbms/tests/queries/0_stateless/00997_trim.sql b/dbms/tests/queries/0_stateless/00997_trim.sql
new file mode 100644
index 00000000000..7519877ec5e
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00997_trim.sql
@@ -0,0 +1,20 @@
+WITH
+    '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' AS x,
+    replaceRegexpAll(x, '.', ' ') AS spaces,
+    concat(substring(spaces, 1, rand(1) % 62), substring(x, 1, rand(2) % 62), substring(spaces, 1, rand(3) % 62)) AS s,
+    trimLeft(s) AS sl,
+    trimRight(s) AS sr,
+    trimBoth(s) AS t,
+    replaceRegexpOne(s, '^ +', '') AS slr,
+    replaceRegexpOne(s, ' +$', '') AS srr,
+    replaceRegexpOne(s, '^ *(.*?) *$', '\\1') AS tr
+SELECT
+    replaceAll(s, ' ', '_'),
+    replaceAll(sl, ' ', '_'),
+    replaceAll(slr, ' ', '_'),
+    replaceAll(sr, ' ', '_'),
+    replaceAll(srr, ' ', '_'),
+    replaceAll(t, ' ', '_'),
+    replaceAll(tr, ' ', '_')
+FROM numbers(100000)
+WHERE NOT ((sl = slr) AND (sr = srr) AND (t = tr))