1 files changed, 3 insertions, 1 deletions
diff --git a/src/nix/build.cc b/src/nix/build.cc
index 850e09ce8..474337208 100644
--- a/src/nix/build.cc
+++ b/src/nix/build.cc
@@ -1,3 +1,4 @@
+#include "eval.hh"
 #include "command.hh"
 #include "common-args.hh"
 #include "shared.hh"
@@ -17,6 +18,7 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixProfile
             .description = "path of the symlink to the build result",
             .labels = {"path"},
             .handler = {&outLink},
+            .completer = completePath
         });
 
         addFlag({
@@ -44,7 +46,7 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixProfile
             },
             Example{
                 "To make a profile point at GNU Hello:",
-                "nix build --profile /tmp/profile nixpkgs.hello"
+                "nix build --profile /tmp/profile nixpkgs#hello"
             },
         };
     }