diff --git a/low_level_platform/impl/src/lf_zephyr_clock_counter.c b/low_level_platform/impl/src/lf_zephyr_clock_counter.c
index 73138533d..42f3de0e7 100644
--- a/low_level_platform/impl/src/lf_zephyr_clock_counter.c
+++ b/low_level_platform/impl/src/lf_zephyr_clock_counter.c
@@ -76,8 +76,6 @@ void _lf_initialize_clock() {
   uint32_t counter_max_ticks = 0;
   int res;
 
-  _lf_initialize_clock_zephyr_common();
-
   // Verify that we have the device
   if (!device_is_ready(counter_dev)) {
     lf_print_error_and_exit("ERROR: counter device not ready.\n");
diff --git a/low_level_platform/impl/src/lf_zephyr_clock_kernel.c b/low_level_platform/impl/src/lf_zephyr_clock_kernel.c
index 5f12d172e..9dc343bc5 100644
--- a/low_level_platform/impl/src/lf_zephyr_clock_kernel.c
+++ b/low_level_platform/impl/src/lf_zephyr_clock_kernel.c
@@ -67,7 +67,6 @@ static volatile bool async_event = false;
 K_SEM_DEFINE(sleeping_sem, 0, 1)
 
 void _lf_initialize_clock() {
-  _lf_initialize_clock_zephyr_common();
   timer_freq = CONFIG_SYS_CLOCK_TICKS_PER_SEC;
   lf_print("--- Using LF Zephyr Kernel Clock with a frequency of %u Hz", timer_freq);
 }
diff --git a/low_level_platform/impl/src/lf_zephyr_support.c b/low_level_platform/impl/src/lf_zephyr_support.c
index d4f67e9d8..74ae9bf90 100644
--- a/low_level_platform/impl/src/lf_zephyr_support.c
+++ b/low_level_platform/impl/src/lf_zephyr_support.c
@@ -51,12 +51,6 @@ void k_sys_fatal_error_handler(unsigned int reason, const struct arch_esf* esf)
   lf_print_error_and_exit("Zephyr kernel panic reason=%d", reason);
 }
 
-void _lf_initialize_clock_zephyr_common() {
-  // Use the Zephyr implementation of printf. This avoids some wierd memory
-  // issues that intermittently arise when calling vfprintf.
-  lf_register_print_function(vfprintfcb, LOG_LEVEL_ERROR);
-}
-
 int lf_sleep(interval_t sleep_duration) {
   k_sleep(K_NSEC(sleep_duration));
   return 0;
@@ -94,8 +88,12 @@ int lf_enable_interrupts_nested() {
 // If NUMBER_OF_WORKERS is not specified, or set to 0, then we default to 1.
 #if !defined(NUMBER_OF_WORKERS) || NUMBER_OF_WORKERS == 0
 #undef NUMBER_OF_WORKERS
+#if defined(LF_REACTION_GRAPH_BREADTH)
+#define NUMBER_OF_WORKERS LF_REACTION_GRAPH_BREADTH
+#else
 #define NUMBER_OF_WORKERS 1
 #endif
+#endif
 
 // If USER_THREADS is not specified, then default to 0.
 #if !defined(USER_THREADS)