diff --git a/src/lib/Hydra/Controller/Jobset.pm b/src/lib/Hydra/Controller/Jobset.pm
index 3dcb1f78..7ef7c680 100644
--- a/src/lib/Hydra/Controller/Jobset.pm
+++ b/src/lib/Hydra/Controller/Jobset.pm
@@ -248,7 +248,7 @@ sub nixExprPathFromParams {
     error($c, "Invalid Nix expression path: $nixExprPath") if $nixExprPath !~ /^$relPathRE$/;
 
     my $nixExprInput = trim $c->stash->{params}->{"nixexprinput"};
-    error($c, "Invalid Nix expression input name: $nixExprInput") unless $nixExprInput =~ /^\w+$/;
+    error($c, "Invalid Nix expression input name: $nixExprInput") unless $nixExprInput =~ /^[[:alpha:]][\w-]*$/;
 
     return ($nixExprPath, $nixExprInput);
 }
@@ -309,7 +309,7 @@ sub updateJobset {
 
     foreach my $inputName (keys %{$c->stash->{params}->{inputs}}) {
         my $inputData = $c->stash->{params}->{inputs}->{$inputName};
-        error($c, "Invalid input name: $inputName") unless $inputName =~ /^[[:alpha:]]\w*$/;
+        error($c, "Invalid input name: $inputName") unless $inputName =~ /^[[:alpha:]][\w-]*$/;
 
         my $inputType = $inputData->{type};
 
diff --git a/src/lib/Hydra/Controller/Root.pm b/src/lib/Hydra/Controller/Root.pm
index 8b7cf4ee..64bdc8cf 100644
--- a/src/lib/Hydra/Controller/Root.pm
+++ b/src/lib/Hydra/Controller/Root.pm
@@ -223,7 +223,7 @@ sub end : ActionClass('RenderView') {
     }
 
     if (scalar @{$c->error}) {
-        $c->stash->{resource} = { errors => "$c->error" };
+        $c->stash->{resource} = { errors => $c->error };
         $c->stash->{template} = 'error.tt';
         $c->stash->{errors} = $c->error;
         $c->response->status(500) if $c->response->status == 200;
diff --git a/tests/api-test.pl b/tests/api-test.pl
index ad91d1a8..d1ea4588 100644
--- a/tests/api-test.pl
+++ b/tests/api-test.pl
@@ -37,13 +37,13 @@ my $project = decode_json(request_json({ uri => '/project/sample' })->content())
 
 ok((not @{$project->{jobsets}}), "A new project has no jobsets");
 
-$result = request_json({ uri => '/jobset/sample/default', method => 'PUT', data => { nixexprpath => "default.nix", nixexprinput => "src", inputs => { src => { type => "path", values => "/run/jobset" } }, enabled => "1", checkinterval => "3600"} });
+$result = request_json({ uri => '/jobset/sample/default', method => 'PUT', data => { nixexprpath => "default.nix", nixexprinput => "my-src", inputs => { "my-src" => { type => "path", values => "/run/jobset" } }, enabled => "1", checkinterval => "3600"} });
 ok($result->code() == 201, "PUTting a new jobset creates it");
 
 my $jobset = decode_json(request_json({ uri => '/jobset/sample/default' })->content());
 
-ok($jobset->{jobsetinputs}->[0]->{name} eq "src", "The new jobset has an 'src' input");
-ok($jobset->{jobsetinputs}->[0]->{jobsetinputalts}->[0]->{value} eq "/run/jobset", "The 'src' input is in /run/jobset");
+ok($jobset->{jobsetinputs}->[0]->{name} eq "my-src", "The new jobset has a 'my-src' input");
+ok($jobset->{jobsetinputs}->[0]->{jobsetinputalts}->[0]->{value} eq "/run/jobset", "The 'my-src' input is in /run/jobset");
 
 system("LOGNAME=root NIX_STORE_DIR=/run/nix/store NIX_LOG_DIR=/run/nix/var/log/nix NIX_STATE_DIR=/run/nix/var/nix HYDRA_DATA=/var/lib/hydra HYDRA_DBI='dbi:Pg:dbname=hydra;user=root;' hydra-evaluator sample default");
 $result = request_json({ uri => '/jobset/sample/default/evals' });