diff --git a/pkgs/by-name/wi/wiiload/fix-gcc15.patch b/pkgs/by-name/wi/wiiload/fix-gcc15.patch
new file mode 100644
index 000000000000..547ecd500407
--- /dev/null
+++ b/pkgs/by-name/wi/wiiload/fix-gcc15.patch
@@ -0,0 +1,21 @@
+diff --git a/source/main.c b/source/main.c
+index 2d817e5..9dfeb3d 100644
+--- a/source/main.c
++++ b/source/main.c
+@@ -28,6 +28,7 @@
+ #include <unistd.h>
+ #include <errno.h>
+ #include <libgen.h>
++#include <stdbool.h>
+ #ifndef _WIN32
+ #include <sys/socket.h>
+ #include <netinet/in.h>
+@@ -62,8 +63,6 @@ typedef signed short s16;
+ typedef signed int s32;
+ typedef signed long long s64;
+
+-typedef enum { false, true } bool;
+-
+ #ifndef __WIN32__
+ static const char *desc_export = "export";
+ #ifndef __APPLE__
\ No newline at end of file
diff --git a/pkgs/by-name/wi/wiiload/package.nix b/pkgs/by-name/wi/wiiload/package.nix
index 24ff433b37f9..6eefa0b0af64 100644
--- a/pkgs/by-name/wi/wiiload/package.nix
+++ b/pkgs/by-name/wi/wiiload/package.nix
@@ -23,6 +23,11 @@ stdenv.mkDerivation (finalAttrs: {
     sha256 = "sha256-pZdZzCAPfAVucuiV/q/ROY3cz/wxQWep6dCTGNn2fSo=";
   };
 
+  patches = [
+    # https://github.com/devkitPro/wiiload/pull/4
+    ./fix-gcc15.patch
+  ];
+
   preConfigure = "./autogen.sh";
 
   meta = {