diff --git a/Source/GTConstantsManager.swift b/Source/GTConstantsManager.swift
index 88a58a7..670dbc2 100644
--- a/Source/GTConstantsManager.swift
+++ b/Source/GTConstantsManager.swift
@@ -140,11 +140,11 @@ public class GTConstantsManager {
 
 // To be used by objc only
 public class GTConstantsBridger: NSObject {
-    public static func string(key: String) -> String {
+    @objc public static func string(key: String) -> String {
         return GTConstantsManager.sharedInstance.string(key: key)
     }
 
-    public static func number(key: String) -> NSNumber {
+    @objc public static func number(key: String) -> NSNumber {
         return GTConstantsManager.sharedInstance.number(key: key)
     }
 }
diff --git a/Source/GTStringsManager.swift b/Source/GTStringsManager.swift
index 5c877b0..c554dd4 100644
--- a/Source/GTStringsManager.swift
+++ b/Source/GTStringsManager.swift
@@ -63,7 +63,7 @@ public class GTStringsManager {
 
 // To be used by objc only
 public class GTStringBridger: NSObject {
-    public static func string(key: String) -> String {
+    @objc public static func string(key: String) -> String {
         return GTStringsManager.sharedInstance.string(key: key)
     }
 }