diff --git a/platform/os/freertos/HAL_OS_freertos.c b/platform/os/freertos/HAL_OS_freertos.c
index b7e5479..eb715f9 100644
--- a/platform/os/freertos/HAL_OS_freertos.c
+++ b/platform/os/freertos/HAL_OS_freertos.c
@@ -104,7 +104,7 @@ void HAL_Printf(_IN_ const char *fmt, ...)
     va_list args;
 
     va_start(args, fmt);
-    printf(fmt, args);
+    vprintf(fmt, args);
     va_end(args);
 
     fflush(stdout);
diff --git a/platform/os/nos/HAL_OS_nos.c b/platform/os/nos/HAL_OS_nos.c
index f3532ac..c4ab9c5 100644
--- a/platform/os/nos/HAL_OS_nos.c
+++ b/platform/os/nos/HAL_OS_nos.c
@@ -70,7 +70,7 @@ void HAL_Printf(_IN_ const char *fmt, ...)
     va_list args;
 
     va_start(args, fmt);
-    printf(fmt, args);
+    vprintf(fmt, args);
     va_end(args);
 
     fflush(stdout);