diff --git a/helpers/HostFixture.jl b/helpers/HostFixture.jl
index 8e350859..cfdec43e 100644
--- a/helpers/HostFixture.jl
+++ b/helpers/HostFixture.jl
@@ -44,16 +44,11 @@ function run_tester(self::Tester, host::String, duration::Number)
         @error "Failed to locate genesis: $genesis"
     end
 
-    # Helper files needed for some hosts
-    keystore = "$(@__DIR__)/../runtimes/$(self.runtime)/keystore"
+    # [gossamer] Provide empty dummy config
+    config, _ = mktemp()
 
-    config = "$(@__DIR__)/../runtimes/$(self.runtime)/gossamer."
-    if Config.docker
-	config *= "docker."
-    end
-    config *= if self.raw "raw" else "json" end * ".config.toml"
-
-    # Copy prepopulated kagome keystore (TODO: Load chain id from genesis) 
+    # [kagome] Provide populated keystore (TODO: Load chain id from genesis)
+    keystore = "$(@__DIR__)/../runtimes/$(self.runtime)/keystore"
     mkpath(joinpath(tempdir, "spectest"))
     cp(keystore, joinpath(tempdir, "spectest", "keystore"))
 
@@ -73,7 +68,6 @@ function run_tester(self::Tester, host::String, duration::Number)
     end
 
     # Prepare command and environment based on command
-    cmd  = ``
     args = ``
     if host == "substrate"
         exec = `polkadot`
@@ -84,7 +78,7 @@ function run_tester(self::Tester, host::String, duration::Number)
         args = `--chain $genesis -d $datadir --bootnodes /dns/localhost/tcp/30363/p2p/12D3KooWEgUjBV5FJAuBSoNMRYFRHjV7PjZwRQ7b43EKX9g7D6xV`
     elseif host == "gossamer"
         exec = `gossamer`
-        args = `--key=alice --config $config --basepath $datadir --log debug`
+        args = `--key=alice --genesis $genesis --config $config --basepath $datadir --log debug`
     else
         error("Unknown host: ", host)
     end
@@ -111,7 +105,7 @@ function run_tester(self::Tester, host::String, duration::Number)
 
     # Run for specified time
     stream = Pipe()
-    proc = run(pipeline(cmd, stdout=stream, stderr=stream), wait=false)
+    proc = run(pipeline(cmd, stdout = stream, stderr = stream), wait = false)
     sleep(duration)
 
     # Stop process if necessary
@@ -119,7 +113,7 @@ function run_tester(self::Tester, host::String, duration::Number)
     if !crashed
         kill(proc)
 
-        while(process_running(proc))
+        while (process_running(proc))
             sleep(0.1)
         end
     end
diff --git a/runtimes/tester/gossamer.docker.raw.config.toml b/runtimes/tester/gossamer.docker.raw.config.toml
deleted file mode 100644
index fd0f85c8..00000000
--- a/runtimes/tester/gossamer.docker.raw.config.toml
+++ /dev/null
@@ -1,34 +0,0 @@
-[global]
-name = "Specification Conformance Test"
-id = "spectest"
-
-[log]
-core = ""
-network = ""
-rpc = ""
-state = ""
-runtime = ""
-babe = ""
-grandpa = ""
-
-[init]
-genesis = "/config/genesis.raw.json"
-
-[core]
-roles = 4
-babe-authority = true
-grandpa-authority = true
-
-[network]
-port = 7001
-bootnodes = []
-protocol = ""
-nobootstrap = true
-nomdns = true
-
-[rpc]
-enabled = false
-port = 8545
-host = "localhost"
-modules = ["system", "author", "chain"]
-ws-port = 8546
diff --git a/runtimes/tester/gossamer.raw.config.toml b/runtimes/tester/gossamer.raw.config.toml
deleted file mode 100644
index 8ec51f3e..00000000
--- a/runtimes/tester/gossamer.raw.config.toml
+++ /dev/null
@@ -1,34 +0,0 @@
-[global]
-name = "Specification Conformance Test Runtime"
-id = "spectest"
-
-[log]
-core = ""
-network = ""
-rpc = ""
-state = ""
-runtime = ""
-babe = ""
-grandpa = ""
-
-[init]
-genesis = "./runtimes/tester/genesis.raw.json"
-
-[core]
-roles = 4
-babe-authority = true
-grandpa-authority = true
-
-[network]
-port = 7001
-bootnodes = []
-protocol = ""
-nobootstrap = true
-nomdns = true
-
-[rpc]
-enabled = false
-port = 8545
-host = "localhost"
-modules = ["system", "author", "chain"]
-ws-port = 8546