diff --git a/lib/heimdall_tools/fortify_mapper.rb b/lib/heimdall_tools/fortify_mapper.rb
index a36202f..adb0e9a 100644
--- a/lib/heimdall_tools/fortify_mapper.rb
+++ b/lib/heimdall_tools/fortify_mapper.rb
@@ -3,7 +3,7 @@
 require 'utilities/xml_to_hash'
 
 NIST_REFERENCE_NAME = 'Standards Mapping - NIST Special Publication 800-53 Revision 4'.freeze
-DEFAULT_NIST_TAG = ["SA-11", "RA-5", "Rev_4"].freeze
+DEFAULT_NIST_TAG = ["SA-11", "RA-5"].freeze
 
 module HeimdallTools
   class FortifyMapper
diff --git a/lib/heimdall_tools/sonarqube_mapper.rb b/lib/heimdall_tools/sonarqube_mapper.rb
index bb5c355..473a22b 100644
--- a/lib/heimdall_tools/sonarqube_mapper.rb
+++ b/lib/heimdall_tools/sonarqube_mapper.rb
@@ -5,7 +5,7 @@
 
 RESOURCE_DIR = Pathname.new(__FILE__).join('../../data')
 
-DEFAULT_NIST_TAG = ["SA-11", "RA-5", "Rev_4"].freeze
+DEFAULT_NIST_TAG = ["SA-11", "RA-5"].freeze
 
 MAPPING_FILES = {
   cwe: File.join(RESOURCE_DIR, 'cwe-nist-mapping.csv'),
diff --git a/lib/heimdall_tools/zap_mapper.rb b/lib/heimdall_tools/zap_mapper.rb
index c608547..fee4c62 100644
--- a/lib/heimdall_tools/zap_mapper.rb
+++ b/lib/heimdall_tools/zap_mapper.rb
@@ -7,7 +7,7 @@
 RESOURCE_DIR = Pathname.new(__FILE__).join('../../data')
 
 CWE_NIST_MAPPING_FILE = File.join(RESOURCE_DIR, 'cwe-nist-mapping.csv')
-DEFAULT_NIST_TAG = ["SA-11", "RA-5", "Rev_4"].freeze
+DEFAULT_NIST_TAG = ["SA-11", "RA-5"].freeze
 
 # rubocop:disable Metrics/AbcSize