diff --git a/lib/graphql/schema/validator/required_validator.rb b/lib/graphql/schema/validator/required_validator.rb
index f939b15c1c..7daffda3ff 100644
--- a/lib/graphql/schema/validator/required_validator.rb
+++ b/lib/graphql/schema/validator/required_validator.rb
@@ -37,7 +37,7 @@ class Validator
       class RequiredValidator < Validator
         # @param one_of [Symbol, Array<Symbol>] An argument, or a list of arguments, that represents a valid set of inputs for this field
         # @param message [String]
-        def initialize(one_of: nil, argument: nil, message: "%{validated} has the wrong arguments", **default_options)
+        def initialize(one_of: nil, argument: nil, message: nil, **default_options)
           @one_of = if one_of
             one_of
           elsif argument
@@ -73,9 +73,23 @@ def validate(_object, _context, value)
           if matched_conditions == 1
             nil # OK
           else
-            @message
+            message
           end
         end
+
+        def message
+          return @message unless @message.nil?
+
+          formatted_arguments = @one_of.map do |arg|
+            if arg.is_a?(Array)
+              "(" + arg.map { |a| Schema::Member::BuildType.camelize(a.to_s) }.join(" and ") + ")"
+            else
+              Schema::Member::BuildType.camelize(arg.to_s)
+            end
+          end
+
+          "%{validated} must include exactly one of the following arguments: #{formatted_arguments.join(", ")}."
+        end
       end
     end
   end
diff --git a/spec/graphql/schema/validator/required_validator_spec.rb b/spec/graphql/schema/validator/required_validator_spec.rb
index b59813ac84..ea896ddcb3 100644
--- a/spec/graphql/schema/validator/required_validator_spec.rb
+++ b/spec/graphql/schema/validator/required_validator_spec.rb
@@ -9,10 +9,10 @@
     {
       config: { one_of: [:a, :b] },
       cases: [
-        { query: "{ validated: multiValidated(a: 1, b: 2) }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
-        { query: "{ validated: multiValidated(a: 1, b: 2, c: 3) }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
-        { query: "{ validated: multiValidated }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
-        { query: "{ validated: multiValidated(c: 3) }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
+        { query: "{ validated: multiValidated(a: 1, b: 2) }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, b."] },
+        { query: "{ validated: multiValidated(a: 1, b: 2, c: 3) }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, b."] },
+        { query: "{ validated: multiValidated }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, b."] },
+        { query: "{ validated: multiValidated(c: 3) }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, b."] },
         { query: "{ validated: multiValidated(a: 1) }", result: 1, error_messages: [] },
         { query: "{ validated: multiValidated(a: 1, c: 3) }", result: 4, error_messages: [] },
         { query: "{ validated: multiValidated(b: 2) }", result: 2, error_messages: [] },
@@ -24,10 +24,10 @@
       cases: [
         { query: "{ validated: multiValidated(a: 1) }", result: 1, error_messages: [] },
         { query: "{ validated: multiValidated(b: 2, c: 3) }", result: 5, error_messages: [] },
-        { query: "{ validated: multiValidated }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
-        { query: "{ validated: multiValidated(a: 1, b: 2, c: 3) }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
-        { query: "{ validated: multiValidated(c: 3) }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
-        { query: "{ validated: multiValidated(b: 2) }", result: nil, error_messages: ["multiValidated has the wrong arguments"] },
+        { query: "{ validated: multiValidated }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: multiValidated(a: 1, b: 2, c: 3) }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: multiValidated(c: 3) }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: multiValidated(b: 2) }", result: nil, error_messages: ["multiValidated must include exactly one of the following arguments: a, (b and c)."] },
       ]
     },
     {
@@ -36,9 +36,9 @@
       cases: [
         { query: "{ validated: validatedInput(input: { a: 1 }) }", result: 1, error_messages: [] },
         { query: "{ validated: validatedInput(input: { b: 2, c: 3 }) }", result: 5, error_messages: [] },
-        { query: "{ validated: validatedInput(input: { a: 1, b: 2, c: 3 }) }", result: nil, error_messages: ["ValidatedInput has the wrong arguments"] },
-        { query: "{ validated: validatedInput(input: { c: 3 }) }", result: nil, error_messages: ["ValidatedInput has the wrong arguments"] },
-        { query: "{ validated: validatedInput(input: { b: 2 }) }", result: nil, error_messages: ["ValidatedInput has the wrong arguments"] },
+        { query: "{ validated: validatedInput(input: { a: 1, b: 2, c: 3 }) }", result: nil, error_messages: ["ValidatedInput must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: validatedInput(input: { c: 3 }) }", result: nil, error_messages: ["ValidatedInput must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: validatedInput(input: { b: 2 }) }", result: nil, error_messages: ["ValidatedInput must include exactly one of the following arguments: a, (b and c)."] },
       ]
     },
     {
@@ -47,10 +47,10 @@
       cases: [
         { query: "{ validated: validatedResolver(a: 1) }", result: 1, error_messages: [] },
         { query: "{ validated: validatedResolver(b: 2, c: 3) }", result: 5, error_messages: [] },
-        { query: "{ validated: validatedResolver(a: 1, b: 2, c: 3) }", result: nil, error_messages: ["validatedResolver has the wrong arguments"] },
-        { query: "{ validated: validatedResolver(c: 3) }", result: nil, error_messages: ["validatedResolver has the wrong arguments"] },
-        { query: "{ validated: validatedResolver(b: 2) }", result: nil, error_messages: ["validatedResolver has the wrong arguments"] },
-        { query: "{ validated: validatedResolver }", result: nil, error_messages: ["validatedResolver has the wrong arguments"] },
+        { query: "{ validated: validatedResolver(a: 1, b: 2, c: 3) }", result: nil, error_messages: ["validatedResolver must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: validatedResolver(c: 3) }", result: nil, error_messages: ["validatedResolver must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: validatedResolver(b: 2) }", result: nil, error_messages: ["validatedResolver must include exactly one of the following arguments: a, (b and c)."] },
+        { query: "{ validated: validatedResolver }", result: nil, error_messages: ["validatedResolver must include exactly one of the following arguments: a, (b and c)."] },
       ]
     },
     {