diff --git a/share/linters/.rubocop.yml b/share/linters/.rubocop.yml
index bb63db6533..c980ff4ff6 100644
--- a/share/linters/.rubocop.yml
+++ b/share/linters/.rubocop.yml
@@ -944,6 +944,9 @@ Lint/NonAtomicFileOperation:
 Lint/IncompatibleIoSelectWithFiberScheduler:
   Enabled: false
 
+Lint/SymbolConversion:
+  Enabled: false
+
 #########
 # METRICS
 ########
diff --git a/src/cli/oneacct b/src/cli/oneacct
index 80f08de33e..ef66ee70dd 100755
--- a/src/cli/oneacct
+++ b/src/cli/oneacct
@@ -75,7 +75,7 @@ CommandParser::CmdParser.new(ARGV) do
             exit(0)
         end
 
-        filter_flag = (options[:userfilter] || VirtualMachinePool::INFO_ALL)
+        filter_flag = options[:userfilter] || VirtualMachinePool::INFO_ALL
         if options[:start_time]
             start_time = options[:start_time].to_i
         else
diff --git a/src/cli/oneshowback b/src/cli/oneshowback
index 9509545cea..7f729243a7 100755
--- a/src/cli/oneshowback
+++ b/src/cli/oneshowback
@@ -77,7 +77,7 @@ CommandParser::CmdParser.new(ARGV) do
             exit(0)
         end
 
-        filter_flag = (options[:userfilter] || VirtualMachinePool::INFO_ALL)
+        filter_flag = options[:userfilter] || VirtualMachinePool::INFO_ALL
 
         start_month = -1
         start_year  = -1
diff --git a/src/flow/lib/models/role.rb b/src/flow/lib/models/role.rb
index 512f2b7ddd..020114a54a 100644
--- a/src/flow/lib/models/role.rb
+++ b/src/flow/lib/models/role.rb
@@ -655,8 +655,8 @@ module OpenNebula
                 return OpenNebula::Error.new("Role #{name} is in DONE state")
             end
 
-            do_offset = (!period.nil? && period.to_i > 0 &&
-                !vms_per_period.nil? && vms_per_period.to_i > 0)
+            do_offset = !period.nil? && period.to_i > 0 &&
+                        !vms_per_period.nil? && vms_per_period.to_i > 0
 
             nodes.each_with_index do |node, index|
                 vm_id = node['deploy_id']
diff --git a/src/hem/onehem-server.rb b/src/hem/onehem-server.rb
index 6fc49bb21f..50b1c2720b 100755
--- a/src/hem/onehem-server.rb
+++ b/src/hem/onehem-server.rb
@@ -193,7 +193,7 @@ module HEMHook
 
     def as_stdin?
         astdin = self['TEMPLATE/ARGUMENTS_STDIN']
-        astdin &&= (astdin.casecmp('yes') || astdin.casecmp('true'))
+        astdin &&= astdin.casecmp('yes') || astdin.casecmp('true')
 
         return false if astdin.nil?
 
diff --git a/src/onedb/fsck/quotas.rb b/src/onedb/fsck/quotas.rb
index 0468adaddd..3c6e474c87 100644
--- a/src/onedb/fsck/quotas.rb
+++ b/src/onedb/fsck/quotas.rb
@@ -394,10 +394,10 @@ module OneDBFsck
         vm_elem.xpath("#{cpu}_USED").each do |e|
             cpu_used = (cpu_used / 100.0)
 
-            different = (e.text.to_f != cpu_used ||
-                ![format('%.2f', cpu_used),
-                  format('%.1f', cpu_used),
-                  format('%.0f', cpu_used)].include?(e.text))
+            different = e.text.to_f != cpu_used ||
+                        ![format('%.2f', cpu_used),
+                          format('%.1f', cpu_used),
+                          format('%.0f', cpu_used)].include?(e.text)
 
             cpu_used_str = format('%.2f', cpu_used)
 
diff --git a/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb b/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb
index 1de36a77b6..02ea268c9c 100644
--- a/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb
+++ b/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb
@@ -2720,7 +2720,7 @@ end
             img_name = VCenterDriver::FileHelper.unescape_path(img_name_escaped)
 
             vc_disks.each do |d|
-                key_matches  = (unmanaged_key && d[:key] == unmanaged_key.to_i)
+                key_matches  = unmanaged_key && d[:key] == unmanaged_key.to_i
                 path_matches = (d[:path_wo_ds] == img_name)
 
                 if key_matches || path_matches