diff --git a/nx/include/switch/services/nfc.h b/nx/include/switch/services/nfc.h
index e217efd4..d132b578 100644
--- a/nx/include/switch/services/nfc.h
+++ b/nx/include/switch/services/nfc.h
@@ -159,8 +159,8 @@ Result nfpuGetModelInfo(HidControllerID id, NfpuModelInfo *out);
 
 Result nfpuOpenApplicationArea(HidControllerID id, u32 app_id, u32 *npad_id);
 Result nfpuGetApplicationArea(HidControllerID id, void *buf, size_t buf_size);
-Result nfpuSetApplicationArea(HidControllerID id, void *buf, size_t buf_size);
-Result nfpuCreateApplicationArea(HidControllerID id, u32 app_id, void *buf, size_t buf_size);
+Result nfpuSetApplicationArea(HidControllerID id, const void *buf, size_t buf_size);
+Result nfpuCreateApplicationArea(HidControllerID id, u32 app_id, const void *buf, size_t buf_size);
 
 Result nfpuFlush(HidControllerID id);
 Result nfpuRestore(HidControllerID id);
diff --git a/nx/source/services/nfc.c b/nx/source/services/nfc.c
index d0a9f2f9..29649e1b 100644
--- a/nx/source/services/nfc.c
+++ b/nx/source/services/nfc.c
@@ -691,7 +691,7 @@ Result nfpuGetApplicationArea(HidControllerID id, void *buf, size_t buf_size) {
     return rc;
 }
 
-Result nfpuSetApplicationArea(HidControllerID id, void *buf, size_t buf_size) {
+Result nfpuSetApplicationArea(HidControllerID id, const void *buf, size_t buf_size) {
     if (id == CONTROLLER_P1_AUTO)
         return nfpuSetApplicationArea(g_controllerP1AutoID, buf, buf_size);
 
@@ -730,9 +730,9 @@ Result nfpuSetApplicationArea(HidControllerID id, void *buf, size_t buf_size) {
     return rc;
 }
 
-Result nfpuCreateApplicationArea(HidControllerID id, u32 app_id, void *buf, size_t buf_size) {
+Result nfpuCreateApplicationArea(HidControllerID id, u32 app_id, const void *buf, size_t buf_size) {
         if (id == CONTROLLER_P1_AUTO)
-        return nfpuGetApplicationArea(g_controllerP1AutoID, buf, buf_size);
+        return nfpuCreateApplicationArea(g_controllerP1AutoID, app_id, buf, buf_size);
 
     IpcCommand c;
     ipcInitialize(&c);