diff --git a/authorize_request_handler.go b/authorize_request_handler.go
index 42d24ad89..f2599a103 100644
--- a/authorize_request_handler.go
+++ b/authorize_request_handler.go
@@ -163,6 +163,17 @@ func (f *Fosite) validateAuthorizeRedirectURI(_ *http.Request, request *Authoriz
 	// Fetch redirect URI from request
 	rawRedirURI := request.Form.Get("redirect_uri")
 
+	// This ensures that the 'redirect_uri' parameter is present for OpenID Connect 1.0 authorization requests as per:
+	//
+	// Authorization Code Flow - https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest
+	// Implicit Flow - https://openid.net/specs/openid-connect-core-1_0.html#ImplicitAuthRequest
+	// Hybrid Flow - https://openid.net/specs/openid-connect-core-1_0.html#HybridAuthRequest
+	//
+	// Note: as per the Hybrid Flow documentation the Hybrid Flow has the same requirements as the Authorization Code Flow.
+	if len(rawRedirURI) == 0 && request.GetRequestedScopes().Has("openid") {
+		return errorsx.WithStack(ErrInvalidRequest.WithHint("The 'redirect_uri' parameter is required when using OpenID Connect 1.0."))
+	}
+
 	// Validate redirect uri
 	redirectURI, err := MatchRedirectURIWithClientRedirectURIs(rawRedirURI, request.Client)
 	if err != nil {
@@ -174,14 +185,18 @@ func (f *Fosite) validateAuthorizeRedirectURI(_ *http.Request, request *Authoriz
 	return nil
 }
 
+func (f *Fosite) parseAuthorizeScope(_ *http.Request, request *AuthorizeRequest) error {
+	request.SetRequestedScopes(RemoveEmpty(strings.Split(request.Form.Get("scope"), " ")))
+
+	return nil
+}
+
 func (f *Fosite) validateAuthorizeScope(ctx context.Context, _ *http.Request, request *AuthorizeRequest) error {
-	scope := RemoveEmpty(strings.Split(request.Form.Get("scope"), " "))
-	for _, permission := range scope {
+	for _, permission := range request.GetRequestedScopes() {
 		if !f.Config.GetScopeStrategy(ctx)(request.Client.GetScopes(), permission) {
 			return errorsx.WithStack(ErrInvalidScope.WithHintf("The OAuth 2.0 Client is not allowed to request scope '%s'.", permission))
 		}
 	}
-	request.SetRequestedScopes(scope)
 
 	return nil
 }
@@ -358,15 +373,19 @@ func (f *Fosite) newAuthorizeRequest(ctx context.Context, r *http.Request, isPAR
 		return request, err
 	}
 
-	if err := f.validateAuthorizeRedirectURI(r, request); err != nil {
+	if err = f.parseAuthorizeScope(r, request); err != nil {
+		return request, err
+	}
+
+	if err = f.validateAuthorizeRedirectURI(r, request); err != nil {
 		return request, err
 	}
 
-	if err := f.validateAuthorizeScope(ctx, r, request); err != nil {
+	if err = f.validateAuthorizeScope(ctx, r, request); err != nil {
 		return request, err
 	}
 
-	if err := f.validateAuthorizeAudience(ctx, r, request); err != nil {
+	if err = f.validateAuthorizeAudience(ctx, r, request); err != nil {
 		return request, err
 	}
 
@@ -374,11 +393,11 @@ func (f *Fosite) newAuthorizeRequest(ctx context.Context, r *http.Request, isPAR
 		return request, errorsx.WithStack(ErrRegistrationNotSupported)
 	}
 
-	if err := f.validateResponseTypes(r, request); err != nil {
+	if err = f.validateResponseTypes(r, request); err != nil {
 		return request, err
 	}
 
-	if err := f.validateResponseMode(r, request); err != nil {
+	if err = f.validateResponseMode(r, request); err != nil {
 		return request, err
 	}
 
diff --git a/integration/oidc_explicit_test.go b/integration/oidc_explicit_test.go
index b9b0ee27e..78ef73b9d 100644
--- a/integration/oidc_explicit_test.go
+++ b/integration/oidc_explicit_test.go
@@ -55,6 +55,18 @@ func TestOpenIDConnectExplicitFlow(t *testing.T) {
 			},
 			authStatusCode: http.StatusOK,
 		},
+		{
+			session:     newIDSession(&jwt.IDTokenClaims{Subject: "peter"}),
+			description: "should fail registered single redirect uri but no redirect uri in request",
+			setup: func(oauthClient *oauth2.Config) string {
+				oauthClient.Scopes = []string{"openid"}
+				oauthClient.RedirectURL = ""
+
+				return oauthClient.AuthCodeURL("12345678901234567890") + "&nonce=11234123"
+			},
+			authStatusCode: http.StatusBadRequest,
+			expectAuthErr:  `{"error":"invalid_request","error_description":"The request is missing a required parameter, includes an invalid parameter value, includes a parameter more than once, or is otherwise malformed. The 'redirect_uri' parameter is required when using OpenID Connect 1.0."}`,
+		},
 		{
 			session:     newIDSession(&jwt.IDTokenClaims{Subject: "peter"}),
 			description: "should fail because nonce is not long enough",
@@ -121,7 +133,8 @@ func TestOpenIDConnectExplicitFlow(t *testing.T) {
 			defer ts.Close()
 
 			oauthClient := newOAuth2Client(ts)
-			fositeStore.Clients["my-client"].(*fosite.DefaultClient).RedirectURIs[0] = ts.URL + "/callback"
+
+			fositeStore.Clients["my-client"].(*fosite.DefaultClient).RedirectURIs = []string{ts.URL + "/callback"}
 
 			resp, err := http.Get(c.setup(oauthClient))
 			require.NoError(t, err)