diff --git a/core/translate/expr.rs b/core/translate/expr.rs
index b6207f9c7..e110523f3 100644
--- a/core/translate/expr.rs
+++ b/core/translate/expr.rs
@@ -3761,6 +3761,7 @@ pub fn get_expr_affinity(
             }
             Affinity::Blob
         }
+        ast::Expr::RowId { .. } => Affinity::Integer,
         ast::Expr::Cast { type_name, .. } => {
             if let Some(type_name) = type_name {
                 crate::schema::affinity(&type_name.name)
diff --git a/testing/affinity.test b/testing/affinity.test
index 9a08003cd..1c32d4e4d 100755
--- a/testing/affinity.test
+++ b/testing/affinity.test
@@ -12,3 +12,11 @@ do_execsql_test_on_specific_db {:memory:} affinity {
   {1|integer} 
   {1a|text} 
 }
+
+do_execsql_test_on_specific_db {:memory:} affinity-rowid {
+	create table t(a integer);
+	insert into t(rowid, a) values (1, 1);
+	select * from t where rowid = '1';
+	select * from t where a = '1';
+} {1
+1}