diff --git a/core/translate/collate.rs b/core/translate/collate.rs
index 425de8a8b0..ad0fdc8b0c 100644
--- a/core/translate/collate.rs
+++ b/core/translate/collate.rs
@@ -59,7 +59,7 @@ impl CollationSeq {
 
     #[inline(always)]
     fn rtrim_cmp(lhs: &str, rhs: &str) -> Ordering {
-        lhs.trim_end().cmp(rhs.trim_end())
+        lhs.trim_end_matches(' ').cmp(rhs.trim_end_matches(' '))
     }
 }
 
diff --git a/testing/select.test b/testing/select.test
index a2d1c93aea..21e8c5201f 100755
--- a/testing/select.test
+++ b/testing/select.test
@@ -1117,4 +1117,9 @@ do_execsql_test_on_specific_db {:memory:} group-by-limit-0 {
 do_execsql_test_in_memory_any_error duplicate-with-cte-name {
   CREATE TABLE t2(x INTEGER);
   WITH t as (SELECT 1), t as (SELECT 2)  SELECT  * FROM t2;
-}
\ No newline at end of file
+}
+
+do_execsql_test_on_specific_db {:memory:} collation-rtrim-1 {
+  SELECT 'x' || CHAR(9) = 'x' COLLATE RTRIM;
+} {0}
+