diff --git a/arch/sim/src/sim/up_initialize.c b/arch/sim/src/sim/up_initialize.c
index 3937ba5327..45d9b4a421 100644
--- a/arch/sim/src/sim/up_initialize.c
+++ b/arch/sim/src/sim/up_initialize.c
@@ -182,15 +182,6 @@ static void up_init_smartfs(void)
 
 void up_initialize(void)
 {
-#ifdef CONFIG_NET
-  /* The real purpose of the following is to make sure that syslog
-   * is drawn into the link.  It is needed by up_tapdev which is linked
-   * separately.
-   */
-
-  syslog(LOG_INFO, "SIM: Initializing\n");
-#endif
-
 #ifdef CONFIG_PM
   /* Initialize the power management subsystem.  This MCU-specific function
    * must be called *very* early in the initialization sequence *before* any
diff --git a/arch/sim/src/sim/up_x11framebuffer.c b/arch/sim/src/sim/up_x11framebuffer.c
index 6fe5f8bd50..016d908c65 100644
--- a/arch/sim/src/sim/up_x11framebuffer.c
+++ b/arch/sim/src/sim/up_x11framebuffer.c
@@ -193,7 +193,6 @@ static int up_x11untraperrors(void)
 
 static void up_x11uninitX(void)
 {
-  fprintf(stderr, "Uninitializing X\n");
   if (g_x11initialized)
     {
 #ifndef CONFIG_SIM_X11NOSHM
@@ -397,7 +396,6 @@ int up_x11initialize(unsigned short width, unsigned short height,
         {
           depth = 32;
         }
-      printf("Pixel bpp is %d bits (using %d)\n", windowAttributes.depth, depth);
 
       *bpp    = depth;
       *stride = (depth * width / 8);