diff --git a/include/tins/dot11/dot11_mgmt.h b/include/tins/dot11/dot11_mgmt.h
index 3e4244d..17a4bfd 100644
--- a/include/tins/dot11/dot11_mgmt.h
+++ b/include/tins/dot11/dot11_mgmt.h
@@ -834,7 +834,7 @@ public:
      * 
      * \return std::string containing the ssid.
      */
-    RSNInformation rsn_information();
+    RSNInformation rsn_information() const;
     
     /**
      * \brief Helper method to search for this PDU's SSID.
diff --git a/src/dot11/dot11_mgmt.cpp b/src/dot11/dot11_mgmt.cpp
index d61eeaa..8a34e26 100644
--- a/src/dot11/dot11_mgmt.cpp
+++ b/src/dot11/dot11_mgmt.cpp
@@ -369,7 +369,7 @@ void Dot11ManagementFrame::vendor_specific(const vendor_specific_type &data) {
 
 // Getters
 
-RSNInformation Dot11ManagementFrame::rsn_information() {
+RSNInformation Dot11ManagementFrame::rsn_information() const {
     return search_and_convert<RSNInformation>(RSN);
 }