diff --git a/core/include/debug.h b/core/include/debug.h
index 21a3a7a25f..618f2582ed 100644
--- a/core/include/debug.h
+++ b/core/include/debug.h
@@ -52,7 +52,7 @@ extern "C" {
 #include "cpu_conf.h"
 #define DEBUG_PRINT(...) \
     do { \
-        if ((sched_active_thread == NULL) || (sched_active_thread->stack_size > THREAD_EXTRA_STACKSIZE_PRINTF)) { \
+        if ((sched_active_thread == NULL) || (sched_active_thread->stack_size >= THREAD_EXTRA_STACKSIZE_PRINTF)) { \
             printf(__VA_ARGS__); \
         } \
         else { \