diff --git a/pkgs/tools/X11/runningx/default.nix b/pkgs/tools/X11/runningx/default.nix
index a4b3f05c94c1..1323da585c89 100644
--- a/pkgs/tools/X11/runningx/default.nix
+++ b/pkgs/tools/X11/runningx/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   phases = [ "buildPhase" "installPhase" ];
 
   buildPhase = ''
-    gcc -O2 -o RunningX $(pkg-config --cflags --libs x11) $src
+    cc -O2 -o RunningX $(pkg-config --cflags --libs x11) $src
   '';
 
   installPhase = ''