diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a89cc4..d4b0d93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,6 +32,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 - Asset compilation for Redmine images
+- Added missing query parentheses
 
 ## [1.2.0] - 2023-02-21
 
diff --git a/app/models/concerns/hourglass/query_base.rb b/app/models/concerns/hourglass/query_base.rb
index 87349be..901c2af 100644
--- a/app/models/concerns/hourglass/query_base.rb
+++ b/app/models/concerns/hourglass/query_base.rb
@@ -102,7 +102,7 @@ def date_value(entry)
   end
 
   def sql_for_date_field(field, operator, value)
-    sql_for_field(field, operator, value, queried_class.table_name, 'start')
+    '(' + sql_for_field(field, operator, value, queried_class.table_name, 'start') + ')'
   end
 
   def sql_for_field(field, operator, value, db_table, db_field, is_custom_filter=false)
diff --git a/app/models/hourglass/time_booking_query.rb b/app/models/hourglass/time_booking_query.rb
index 46c3c13..fdbf4ad 100644
--- a/app/models/hourglass/time_booking_query.rb
+++ b/app/models/hourglass/time_booking_query.rb
@@ -58,27 +58,27 @@ def base_scope
     end
 
     def sql_for_user_id_field(field, operator, value)
-      sql_for_field(field, operator, value, User.table_name, 'id')
+      '(' + sql_for_field(field, operator, value, User.table_name, 'id') + ')'
     end
 
     def sql_for_project_id_field(field, operator, value)
-      sql_for_field(field, operator, value, Project.table_name, 'id')
+      '(' + sql_for_field(field, operator, value, Project.table_name, 'id') + ')'
     end
 
     def sql_for_issue_id_field(field, operator, value)
-      sql_for_field(field, operator, value, Issue.table_name, 'id')
+      '(' + sql_for_field(field, operator, value, Issue.table_name, 'id') + ')'
     end
 
     def sql_for_issue_subject_field(field, operator, value)
-      sql_for_field(field, operator, value, Issue.table_name, 'subject')
+      '(' + sql_for_field(field, operator, value, Issue.table_name, 'subject') + ')'
     end
 
     def sql_for_fixed_version_id_field(field, operator, value)
-      sql_for_field(field, operator, value, Issue.table_name, 'fixed_version_id')
+      '(' + sql_for_field(field, operator, value, Issue.table_name, 'fixed_version_id') + ')'
     end
 
     def sql_for_comments_field(field, operator, value)
-      sql_for_field(field, operator, value, TimeEntry.table_name, 'comments', true)
+      '(' + sql_for_field(field, operator, value, TimeEntry.table_name, 'comments', true) + ')'
     end
 
     def sql_for_activity_id_field(field, operator, value)
diff --git a/app/models/hourglass/time_log_query.rb b/app/models/hourglass/time_log_query.rb
index c2827d7..e693ffd 100644
--- a/app/models/hourglass/time_log_query.rb
+++ b/app/models/hourglass/time_log_query.rb
@@ -45,11 +45,11 @@ def base_scope
 
     def sql_for_booked_field(field, operator, _value)
       operator_to_use = operator == '=' ? '*' : '!*'
-      sql_for_field(field, operator_to_use, nil, TimeBooking.table_name, 'id')
+      '(' + sql_for_field(field, operator_to_use, nil, TimeBooking.table_name, 'id') + ')'
     end
 
     def sql_for_comments_field(field, operator, value)
-      sql_for_field(field, operator, value, TimeLog.table_name, 'comments', true)
+      '(' + sql_for_field(field, operator, value, TimeLog.table_name, 'comments', true) + ')'
     end
 
     def total_for_hours(scope)
diff --git a/app/models/hourglass/time_tracker_query.rb b/app/models/hourglass/time_tracker_query.rb
index bf0c0aa..7399b05 100644
--- a/app/models/hourglass/time_tracker_query.rb
+++ b/app/models/hourglass/time_tracker_query.rb
@@ -55,7 +55,7 @@ def base_scope
     end
 
     def sql_for_fixed_version_id_field(field, operator, value)
-      sql_for_field(field, operator, value, Issue.table_name, 'fixed_version_id')
+      '(' + sql_for_field(field, operator, value, Issue.table_name, 'fixed_version_id') + ')'
     end
 
     def sql_for_custom_field(*args)
@@ -67,7 +67,7 @@ def sql_for_custom_field(*args)
     end
 
     def sql_for_comments_field(field, operator, value)
-      sql_for_field(field, operator, value, TimeTracker.table_name, 'comments', true)
+      '(' + sql_for_field(field, operator, value, TimeTracker.table_name, 'comments', true) + ')'
     end
 
     def has_through_associations