diff --git a/flake.lock b/flake.lock
index 98f71cb..7217379 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1717179513,
-        "narHash": "sha256-vboIEwIQojofItm2xGCdZCzW96U85l9nDW3ifMuAIdM=",
+        "lastModified": 1748026580,
+        "narHash": "sha256-rWtXrcIzU5wm/C8F9LWvUfBGu5U5E7cFzPYT1pHIJaQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "63dacb46bf939521bdc93981b4cbb7ecb58427a0",
+        "rev": "11cb3517b3af6af300dd6c055aeda73c9bf52c48",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "24.05",
+        "ref": "25.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 397d3fc..eae57fb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "A flake for dump1090 with DL0XK patches.";
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/24.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/25.05";
   };
 
 
diff --git a/net_io.c b/net_io.c
index e33e98c..8ae5f08 100644
--- a/net_io.c
+++ b/net_io.c
@@ -93,7 +93,7 @@ struct net_service *serviceInit(const char *descr, struct net_writer *writer, he
 {
     struct net_service *service;
 
-    if (!(service = calloc(sizeof(*service), 1))) {
+    if (!(service = calloc(1, sizeof(*service)))) {
         fprintf(stderr, "Out of memory allocating service %s\n", descr);
         exit(1);
     }