diff --git a/lib/trailblazer/finder/activities/prepare_entity.rb b/lib/trailblazer/finder/activities/prepare_entity.rb
index a39a170..117faa1 100644
--- a/lib/trailblazer/finder/activities/prepare_entity.rb
+++ b/lib/trailblazer/finder/activities/prepare_entity.rb
@@ -17,7 +17,7 @@ def set_entity(ctx, config:, **)
         end
 
         step :validate_entity
-        fail :invalid_entity_error
+        left :invalid_entity_error
         step :set_entity
       end
     end
diff --git a/lib/trailblazer/finder/activities/prepare_filters.rb b/lib/trailblazer/finder/activities/prepare_filters.rb
index 74308cf..75a4dfb 100644
--- a/lib/trailblazer/finder/activities/prepare_filters.rb
+++ b/lib/trailblazer/finder/activities/prepare_filters.rb
@@ -21,7 +21,7 @@ def set_filters(ctx, config:, **)
         end
 
         step :validate_filters
-        fail :invalid_filters_error
+        left :invalid_filters_error
         step :set_filters
       end
     end
diff --git a/lib/trailblazer/finder/activities/prepare_params.rb b/lib/trailblazer/finder/activities/prepare_params.rb
index e76bec7..58f7502 100644
--- a/lib/trailblazer/finder/activities/prepare_params.rb
+++ b/lib/trailblazer/finder/activities/prepare_params.rb
@@ -19,7 +19,7 @@ def set_params(ctx, **)
         end
 
         step :validate_params
-        fail :invalid_params_error
+        left :invalid_params_error
         step :set_params
       end
     end
diff --git a/lib/trailblazer/finder/activities/prepare_properties.rb b/lib/trailblazer/finder/activities/prepare_properties.rb
index 8d5f5be..103ccaf 100644
--- a/lib/trailblazer/finder/activities/prepare_properties.rb
+++ b/lib/trailblazer/finder/activities/prepare_properties.rb
@@ -32,7 +32,7 @@ def set_properties(ctx, config:, **)
 
         step :check_property_types
         step :validate_property_types
-        fail :invalid_properties_error
+        left :invalid_properties_error
         step :set_properties
       end
     end
diff --git a/lib/trailblazer/finder/activities/process_adapters.rb b/lib/trailblazer/finder/activities/process_adapters.rb
index 7e790ad..a0b00db 100644
--- a/lib/trailblazer/finder/activities/process_adapters.rb
+++ b/lib/trailblazer/finder/activities/process_adapters.rb
@@ -37,7 +37,7 @@ def invalid_paginator_handler(_e, (ctx, _flow_options), **)
         step :set_adapter, fast_track: true
         step Rescue(Dry::Types::ConstraintError, handler: :invalid_paginator_handler) {
           step :set_paginator
-          fail :invalid_paginator_error
+          left :invalid_paginator_error
         }
       end
     end
diff --git a/trailblazer-finder.gemspec b/trailblazer-finder.gemspec
index e0b06f0..7247cc6 100644
--- a/trailblazer-finder.gemspec
+++ b/trailblazer-finder.gemspec
@@ -20,6 +20,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "dry-types", ">= 1.0.0"
   spec.add_dependency "trailblazer-macro", ">= 2.1.15"
   spec.add_dependency "trailblazer-activity", ">= 0.13.0"
+  spec.add_dependency "trailblazer-activity-dsl-linear", ">= 1.2.5"
   spec.add_dependency "zeitwerk", ">= 2.6.0"
 
   spec.add_development_dependency "activerecord"