diff --git a/src/logger.cr b/src/logger.cr
index 023a259..8fe44ee 100644
--- a/src/logger.cr
+++ b/src/logger.cr
@@ -54,8 +54,8 @@ module Logger
   end
 
   {% for level in LOG_LEVELS.keys %}
-    macro {{level.downcase.id}}(message)
-      ::Logger.log {{level}}, Logger.generate_log_line + \{{message}}
+    macro {{level.downcase.id}}(message, *args)
+      ::Logger.log({{level}}, Logger.generate_log_line + \{{message}}, \{{*args}})
     end
   {% end %}
 
@@ -71,18 +71,17 @@ module Logger
     end
   end
 
-  {% for level in %w[ min max ] %}
-    def self.{{level.id}}=(selection : String) : Nil
-      Logger.debug "Entering with #{selection}"
-      raise "ERROR : {{level.id}}= : Invalid level" unless _level = LOG_LEVELS[selection.upcase]
-      synchronize {
-        @@{{level.id}}_level = _level
-      }
-    end
-    def self.{{level.id}} : String
-      @@{{level.id}}_level.to_s.downcase
-    end
-  {% end %}
+  def self.min=(selection : String) : Nil
+    Logger.debug "Entering with #{selection}"
+    raise "ERROR : {{level.id}}= : Invalid level" unless _level = LOG_LEVELS[selection.upcase]
+    synchronize {
+      @@min_level = _level
+    }
+  end
+
+  def self.min : String
+    @@min_level.to_s.downcase
+  end
 
   def self.valid?(level : LOG_LEVEL) : Bool
     level.in?(@@min_level.value..@@max_level.value)
@@ -95,8 +94,9 @@ module Logger
     Logger.debug "Debug set to #{state}"
   end
 
-  def self.log(level : String, message : String)
+  def self.log(level : String, message : String, *args)
     _level = LOG_LEVELS[level]
+    message = message % args unless args.empty?
     if valid?(_level) || debug?
       synchronize {
           time = Time.local