diff --git a/pkgs/by-name/po/popa3d/fix-gcc15.patch b/pkgs/by-name/po/popa3d/fix-gcc15.patch
new file mode 100644
index 000000000000..77bdca589721
--- /dev/null
+++ b/pkgs/by-name/po/popa3d/fix-gcc15.patch
@@ -0,0 +1,22 @@
+diff --git a/standalone.c b/standalone.c
+index 216d937..2bce0e8 100644
+--- a/standalone.c
++++ b/standalone.c
+@@ -108,7 +108,7 @@ int do_standalone(void)
+ int main(void)
+ #endif
+ {
+-	int true = 1;
++	int opt = 1;
+ 	int sock, new;
+ 	struct sockaddr_in addr;
+ 	socklen_t addrlen;
+@@ -123,7 +123,7 @@ int main(void)
+ 		return log_error("socket");
+ 
+ 	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
+-	    (void *)&true, sizeof(true)))
++	    (void *)&opt, sizeof(opt)))
+ 		return log_error("setsockopt");
+ 
+ 	memset(&addr, 0, sizeof(addr));
diff --git a/pkgs/by-name/po/popa3d/package.nix b/pkgs/by-name/po/popa3d/package.nix
index f617760672a5..5a2c6b9680c7 100644
--- a/pkgs/by-name/po/popa3d/package.nix
+++ b/pkgs/by-name/po/popa3d/package.nix
@@ -21,6 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
     ./use-openssl.patch
     ./use-glibc-crypt.patch
     ./enable-standalone-mode.patch
+    ./fix-gcc15.patch
   ];
 
   enableParallelBuilding = true;