diff --git a/lib/fog/aws/parsers/iam/get_group_policy.rb b/lib/fog/aws/parsers/iam/get_group_policy.rb
index 5c8ca9946..f139fa5c5 100644
--- a/lib/fog/aws/parsers/iam/get_group_policy.rb
+++ b/lib/fog/aws/parsers/iam/get_group_policy.rb
@@ -14,7 +14,7 @@ module Fog
             when 'GroupName', 'PolicyName'
               @response[name] = value
             when 'PolicyDocument'
-              @response['Policy'][name] = if decoded_string = URI.decode(value)
+              @response['Policy'][name] = if decoded_string = URI.decode_www_form_component(value)
                                   Fog::JSON.decode(decoded_string) rescue value
                                 else
                                   value
diff --git a/lib/fog/aws/parsers/iam/get_role_policy.rb b/lib/fog/aws/parsers/iam/get_role_policy.rb
index 124cc467c..88efd19ed 100644
--- a/lib/fog/aws/parsers/iam/get_role_policy.rb
+++ b/lib/fog/aws/parsers/iam/get_role_policy.rb
@@ -12,7 +12,7 @@ module Fog
             when 'RoleName', 'PolicyName'
               @response['Policy'][name] = value
             when 'PolicyDocument'
-              @response['Policy'][name] = if decoded_string = URI.decode(value)
+              @response['Policy'][name] = if decoded_string = URI.decode_www_form_component(value)
                                   Fog::JSON.decode(decoded_string) rescue value
                                 else
                                   value
diff --git a/lib/fog/aws/parsers/iam/get_user_policy.rb b/lib/fog/aws/parsers/iam/get_user_policy.rb
index af26e7b4a..8aaa1fd77 100644
--- a/lib/fog/aws/parsers/iam/get_user_policy.rb
+++ b/lib/fog/aws/parsers/iam/get_user_policy.rb
@@ -14,7 +14,7 @@ module Fog
             when 'UserName', 'PolicyName'
               @response['Policy'][name] = value
             when 'PolicyDocument'
-              @response['Policy'][name] = if decoded_string = URI.decode(value)
+              @response['Policy'][name] = if decoded_string = URI.decode_www_form_component(value)
                                   Fog::JSON.decode(decoded_string) rescue value
                                 else
                                   value
diff --git a/lib/fog/aws/parsers/iam/policy_version.rb b/lib/fog/aws/parsers/iam/policy_version.rb
index 1a974f51f..fecdbb01e 100644
--- a/lib/fog/aws/parsers/iam/policy_version.rb
+++ b/lib/fog/aws/parsers/iam/policy_version.rb
@@ -18,7 +18,7 @@ module Fog
             when 'IsDefaultVersion'
               @version[name] = (value == 'true')
             when 'Document'
-              @version[name] = if decoded_string = URI.decode(value)
+              @version[name] = if decoded_string = URI.decode_www_form_component(value)
                                  Fog::JSON.decode(decoded_string) rescue value
                                else
                                  value