diff --git a/pkgs/development/tools/flamegraph/default.nix b/pkgs/development/tools/flamegraph/default.nix
index 3a64d741de5c..90e3541c3f28 100644
--- a/pkgs/development/tools/flamegraph/default.nix
+++ b/pkgs/development/tools/flamegraph/default.nix
@@ -28,6 +28,7 @@ stdenv.mkDerivation rec {
     license = with licenses; [ asl20 cddl gpl2Plus ];
     homepage = "http://www.brendangregg.com/flamegraphs.html";
     description = "Visualization for profiled code";
+    mainProgram = "flamegraph.pl";
     platforms = platforms.unix;
   };
 }