diff --git a/src/prologue/core/context.nim b/src/prologue/core/context.nim
index e32ce64f5..58902289f 100644
--- a/src/prologue/core/context.nim
+++ b/src/prologue/core/context.nim
@@ -272,7 +272,7 @@ proc multiMatch*(s: string, replacements: StringTableRef): string =
     pos += parseUntil(s, tok, startChar, pos)
     result.add tok
     if pos < s.len:
-      assert s[pos-1] == sep, "The char before '{' must be '/'"
+      assert s[pos - 1] == sep, "The char before '{' must be '/'"
     else:
       break
     inc(pos)
diff --git a/src/prologue/core/middlewaresbase.nim b/src/prologue/core/middlewaresbase.nim
index eb8ac2de8..49004a799 100644
--- a/src/prologue/core/middlewaresbase.nim
+++ b/src/prologue/core/middlewaresbase.nim
@@ -27,13 +27,13 @@ proc switch*(ctx: Context) {.async.} =
     let
       handler = findHandler(ctx)
       next = handler.handler
-    var
-      middlewares = handler.middlewares
 
-    ctx.middlewares = middlewares & next
+    ctx.middlewares = handler.middlewares
+    ctx.middlewares.add next
     ctx.first = false
 
   incSize(ctx)
+
   if ctx.size <= ctx.middlewares.len:
     let next = ctx.middlewares[ctx.size - 1]
     await next(ctx)
@@ -41,10 +41,12 @@ proc switch*(ctx: Context) {.async.} =
     let
       handler = findHandler(ctx)
       lastHandler = handler.handler
-      middlewares = handler.middlewares
+
     ctx.localSettings = handler.settings
-    ctx.middlewares.add middlewares & lastHandler
+    ctx.middlewares.add handler.middlewares
+    ctx.middlewares.add lastHandler
     ctx.first = false
+
     let next = ctx.middlewares[ctx.size - 1]
     await next(ctx)
 
diff --git a/src/prologue/core/nativesettings.nim b/src/prologue/core/nativesettings.nim
index 49caf09e3..ee4151844 100644
--- a/src/prologue/core/nativesettings.nim
+++ b/src/prologue/core/nativesettings.nim
@@ -57,8 +57,7 @@ proc newLocalSettings*(data: JsonNode): LocalSettings {.inline.} =
 
 proc newLocalSettings*(configPath: string): LocalSettings {.inline.} =
   ## Creates a new localSettings.
-  var data = parseFile(configPath)
-  result = LocalSettings(data: data)
+  result = LocalSettings(data: parseFile(configPath))
 
 proc newSettings*(address = "", port = Port(8080), debug = true, reusePort = true,
                   staticDirs: openArray[string] = ["static"], secretKey = randomString(8),
@@ -85,7 +84,6 @@ proc newSettings*(configPath: string, address = "", port = Port(8080), debug = t
                   appName = ""): Settings {.inline.} =
   ## Creates a new settings.
   # make sure reserved keys must appear in settings
-  var data = parseFile(configPath)
   result = Settings(address: address, port: port, debug: debug, reusePort: reusePort,
                     staticDirs: @staticDirs, appName: appName,
-                    data: data)
+                    data: parseFile(configPath))
diff --git a/src/prologue/core/urandom.nim b/src/prologue/core/urandom.nim
index 0c6c072e9..979ece55d 100644
--- a/src/prologue/core/urandom.nim
+++ b/src/prologue/core/urandom.nim
@@ -14,7 +14,7 @@
 
 
 from strutils import strip
-from nimcrypto import randomBytes
+from nimcrypto/sysrand import randomBytes
 
 from ../core/types import SecretKey
 from ../core/encode import urlsafeBase64Encode
diff --git a/src/prologue/middlewares/utils.nim b/src/prologue/middlewares/utils.nim
index b1d476197..1b0c48428 100644
--- a/src/prologue/middlewares/utils.nim
+++ b/src/prologue/middlewares/utils.nim
@@ -23,6 +23,13 @@ from ../core/middlewaresbase import switch
 import ../core/request
 
 
+proc testMiddleware*(): HandlerAsync =
+  result = proc(ctx: Context) {.async.} =
+    logging.info "debug->begin"
+    await switch(ctx)
+    logging.info "debug->end"
+
+
 proc loggingMiddleware*(appName = "Starlight"): HandlerAsync =
   result = proc(ctx: Context) {.async.} =
     logging.info "loggingMiddleware->begin"