diff --git a/SYS/lhs_log.pbi b/SYS/lhs_log.pbi
index 5f7e276..0380d57 100644
--- a/SYS/lhs_log.pbi
+++ b/SYS/lhs_log.pbi
@@ -48,11 +48,14 @@ DeclareModule lhs_log
   Declare Init()
   Declare Out(ToLog.s, debugger.i = #NoDebug)  
   Declare OutL(LogType.i, ToLog.s, debugger.i = #NoDebug)
+  Declare Disable()
   Declare Close()
 EndDeclareModule
 
 Module lhs_log
   Global File_ID.i
+  Global log_state.i = #true
+  
   CompilerIf #PB_Compiler_OS = #PB_OS_Linux
     Global LogFile.s = "/var/log/"+App_Name+".log"
   CompilerElseIf #PB_Compiler_OS = #PB_OS_Windows
@@ -131,6 +134,14 @@ Module lhs_log
     LastSize + StringByteLength(String.s)  
   EndProcedure
   
+  Procedure Disable()
+    log_state = #False
+  EndProcedure
+  
+  Procedure Enable()
+    log_state = #True
+  EndProcedure
+  
   Procedure LogThread(nix)
     Shared Mutex
     Define ToWrite.s
@@ -183,17 +194,19 @@ Module lhs_log
     ProcedureReturn #True
   EndProcedure
   
-  Procedure Out(ToLog.s, debugger.i = #NoDebug)    
-    Shared Mutex
-    LockMutex(Mutex)
-    LastElement(Messages())
-    AddElement(Messages())
-    Messages() = ToLog
-    If debugger = #Debug
-      Debug ToLog
+  Procedure Out(ToLog.s, debugger.i = #NoDebug)
+    If log_state
+      Shared Mutex
+      LockMutex(Mutex)
+      LastElement(Messages())
+      AddElement(Messages())
+      Messages() = ToLog
+      If debugger = #Debug
+        Debug ToLog
+      EndIf
+      UnlockMutex(Mutex)
+      SignalSemaphore(Semaphore)
     EndIf
-    UnlockMutex(Mutex)
-    SignalSemaphore(Semaphore)
   EndProcedure
   
   Procedure OutL(LogType.i, ToLog.s, debugger.i = #NoDebug)