diff --git a/ril/libril/RilSapSocket.cpp b/ril/libril/RilSapSocket.cpp
index cf99773..664e6a9 100644
--- a/ril/libril/RilSapSocket.cpp
+++ b/ril/libril/RilSapSocket.cpp
@@ -112,7 +112,7 @@ RilSapSocket *RilSapSocket::getSocketById(RIL_SOCKET_ID socketId) {
 }
 
 void RilSapSocket::initSapSocket(const char *socketName,
-        RIL_RadioFunctions *uimFuncs) {
+        const RIL_RadioFunctions *uimFuncs) {
 
     if (strcmp(socketName, RIL1_SERVICE_NAME) == 0) {
         if(!SocketExists(socketName)) {
@@ -146,7 +146,7 @@ void RilSapSocket::initSapSocket(const char *socketName,
 }
 
 void RilSapSocket::addSocketToList(const char *socketName, RIL_SOCKET_ID socketid,
-        RIL_RadioFunctions *uimFuncs) {
+        const RIL_RadioFunctions *uimFuncs) {
     RilSapSocket* socket = NULL;
     RilSapSocketList *current;
 
@@ -191,7 +191,7 @@ bool RilSapSocket::SocketExists(const char *socketName) {
 
 RilSapSocket::RilSapSocket(const char *socketName,
         RIL_SOCKET_ID socketId,
-        RIL_RadioFunctions *inputUimFuncs):
+        const RIL_RadioFunctions *inputUimFuncs):
         RilSocket(socketName, socketId) {
     if (inputUimFuncs) {
         uimFuncs = inputUimFuncs;
@@ -287,4 +287,4 @@ void RilSapSocket::onUnsolicitedResponse(int unsolResponse, void *data, size_t d
         sap::processUnsolResponse(&rsp, this);
         free(payload);
     }
-}
\ No newline at end of file
+}
diff --git a/ril/libril/RilSapSocket.h b/ril/libril/RilSapSocket.h
index 8c8c4bc..1a816c5 100644
--- a/ril/libril/RilSapSocket.h
+++ b/ril/libril/RilSapSocket.h
@@ -39,7 +39,7 @@ class RilSapSocket : public RilSocket {
      * Place holder for the radio functions returned by the initialization
      * function. Currenty only onRequest handler is being used.
      */
-    RIL_RadioFunctions* uimFuncs;
+    const RIL_RadioFunctions* uimFuncs;
 
     /**
      * Wrapper struct for handling the requests in the queue.
@@ -69,7 +69,7 @@ class RilSapSocket : public RilSocket {
          * @param Radio functions to be used by the socket.
          */
         static void initSapSocket(const char *socketName,
-        RIL_RadioFunctions *uimFuncs);
+        const RIL_RadioFunctions *uimFuncs);
 
         /**
          * Ril envoronment variable that holds the request and
@@ -137,7 +137,7 @@ class RilSapSocket : public RilSocket {
          * and add socket to the socket list.
          */
         static void addSocketToList(const char *socketName, RIL_SOCKET_ID socketid,
-        RIL_RadioFunctions *uimFuncs);
+        const RIL_RadioFunctions *uimFuncs);
 
         /**
          * Check if a socket of the given name exists in the socket list.
@@ -157,7 +157,7 @@ class RilSapSocket : public RilSocket {
          */
         RilSapSocket(const char *socketName,
         RIL_SOCKET_ID socketId,
-        RIL_RadioFunctions *inputUimFuncs);
+        const RIL_RadioFunctions *inputUimFuncs);
 
         /**
          * Class method that selects the socket on which the onRequestComplete
diff --git a/ril/libril/ril.cpp b/ril/libril/ril.cpp
index 3abe559..f4e1494 100644
--- a/ril/libril/ril.cpp
+++ b/ril/libril/ril.cpp
@@ -461,10 +461,10 @@ RIL_register (const RIL_RadioFunctions *callbacks) {
 }
 
 extern "C" void
-RIL_register_socket (RIL_RadioFunctions *(*Init)(const struct RIL_Env *, int, char **),
+RIL_register_socket (const RIL_RadioFunctions *(*Init)(const struct RIL_Env *, int, char **),
         RIL_SOCKET_TYPE socketType, int argc, char **argv) {
 
-    RIL_RadioFunctions* UimFuncs = NULL;
+    const RIL_RadioFunctions* UimFuncs = NULL;
 
     if(Init) {
         UimFuncs = Init(&RilSapSocket::uimRilEnv, argc, argv);
diff --git a/ril/libril/sap_service.cpp b/ril/libril/sap_service.cpp
index 52ebd6c..b4f1dbe 100644
--- a/ril/libril/sap_service.cpp
+++ b/ril/libril/sap_service.cpp
@@ -922,7 +922,7 @@ void sap::processUnsolResponse(MsgHeader *rsp, RilSapSocket *sapSocket) {
     processResponse(rsp, sapSocket, MsgType_UNSOL_RESPONSE);
 }
 
-void sap::registerService(RIL_RadioFunctions *callbacks) {
+void sap::registerService(const RIL_RadioFunctions *callbacks) {
     using namespace android::hardware;
     int simCount = 1;
     const char *serviceNames[] = {
diff --git a/ril/libril/sap_service.h b/ril/libril/sap_service.h
index afed612..cb5ae10 100644
--- a/ril/libril/sap_service.h
+++ b/ril/libril/sap_service.h
@@ -24,10 +24,10 @@
 
 namespace sap {
 
-void registerService(RIL_RadioFunctions *callbacks);
+void registerService(const RIL_RadioFunctions *callbacks);
 void processResponse(MsgHeader *rsp, RilSapSocket *sapSocket);
 void processUnsolResponse(MsgHeader *rsp, RilSapSocket *sapSocket);
 
 }   // namespace android
 
-#endif  // RIL_SERVICE_H
\ No newline at end of file
+#endif  // RIL_SERVICE_H