diff --git a/backends/dropbox/index.js b/backends/dropbox/index.js
index 58f5c92..f316ee6 100644
--- a/backends/dropbox/index.js
+++ b/backends/dropbox/index.js
@@ -68,10 +68,6 @@ export default class Dropbox extends OAuthBackend {
 		});
 	}
 
-	oAuthParams () {
-		return `&redirect_uri=${encodeURIComponent(this.constructor.authProvider)}&response_type=code`;
-	}
-
 	static userCall = ["users/get_current_account", "null", "POST"];
 	static userSchema = {
 		username: "email",
diff --git a/backends/github/github.js b/backends/github/github.js
index 57353d0..cfc8c8d 100644
--- a/backends/github/github.js
+++ b/backends/github/github.js
@@ -11,8 +11,8 @@ export default class Github extends OAuthBackend {
 		this.updatePermissions({ read: true });
 	}
 
-	oAuthParams () {
-		return "&scope=user%20repo";
+	static get oAuthParams () {
+		return super.oAuthParams + "&scope=user%20repo";
 	}
 
 	static userSchema = {
diff --git a/backends/google/google.js b/backends/google/google.js
index f170656..781d5e8 100644
--- a/backends/google/google.js
+++ b/backends/google/google.js
@@ -18,8 +18,8 @@ export default class Google extends OAuthBackend {
 		avatar: ["picture", "photoURL"],
 	};
 
-	oAuthParams () {
-		return `&redirect_uri=${this.constructor.authProvider}&response_type=code&scope=${encodeURIComponent(this.constructor.scopes.join(" "))}`;
+	static get oAuthParams () {
+		return super.oAuthParams + `&scope=${ encodeURIComponent(this.scopes.join(" ")) }`;
 	}
 
 	static oAuth = "https://accounts.google.com/o/oauth2/auth";
diff --git a/src/oauth-backend.js b/src/oauth-backend.js
index 55b2929..e9bd5fd 100644
--- a/src/oauth-backend.js
+++ b/src/oauth-backend.js
@@ -56,8 +56,8 @@ export default class OAuthBackend extends AuthBackend {
 	}
 
 	// Any extra params to be passed to the oAuth URL.
-	oAuthParams () {
-		return "";
+	static get oAuthParams () {
+		return `&redirect_uri=${ encodeURIComponent(this.authProvider) }&response_type=code`;
 	}
 
 	/**
@@ -238,7 +238,7 @@ export default class OAuthBackend extends AuthBackend {
 			backend: oAuthBackend.name
 		};
 
-		this.authPopup = open(`${this.constructor.oAuth}?client_id=${this.clientId}&state=${encodeURIComponent(JSON.stringify(state))}` + this.oAuthParams(),
+		this.authPopup = open(`${this.constructor.oAuth}?client_id=${this.clientId}&state=${encodeURIComponent(JSON.stringify(state))}` + this.constructor.oAuthParams,
 			"popup", `width=${popup.width},height=${popup.height},left=${popup.left},top=${popup.top}`);
 
 		if (!this.authPopup) {