diff --git a/pkgs/by-name/di/disk_indicator/package.nix b/pkgs/by-name/di/disk_indicator/package.nix
index 8de9b94a97f1..01cb82f987ce 100644
--- a/pkgs/by-name/di/disk_indicator/package.nix
+++ b/pkgs/by-name/di/disk_indicator/package.nix
@@ -23,6 +23,8 @@ stdenv.mkDerivation {
     substituteInPlace Makefile --replace "-Werror" ""
     # avoid host-specific options
     substituteInPlace Makefile --replace "-march=native" ""
+    # fix signal handler signature
+    substituteInPlace src/main.c --replace-fail "void handle_signal()" "void handle_signal(int sig)"
   '';
 
   postConfigure = ''