diff --git a/include/ledger_assert.h b/include/ledger_assert.h
index 8141314b4..776c30c69 100644
--- a/include/ledger_assert.h
+++ b/include/ledger_assert.h
@@ -3,7 +3,7 @@
 #include <stdbool.h>
 
 #ifdef HAVE_PRINTF
-#include "os.h"
+void assert_print_failed(void);
 #endif
 
 #ifdef LEDGER_ASSERT_CONFIG_FILE_INFO
@@ -97,7 +97,7 @@ void assert_print_file_info(const char *file, int line);
         ASSERT_DISPLAY_LR_AND_PC(_lr_address, _pc_address); \
     } while (0)
 #elif defined(HAVE_PRINTF)
-#define LEDGER_ASSERT_LR_AND_PC() PRINTF("LEDGER_ASSERT FAILED\n")
+#define LEDGER_ASSERT_LR_AND_PC() assert_print_failed()
 #else
 #define LEDGER_ASSERT_LR_AND_PC() \
     do {                          \
diff --git a/src/ledger_assert.c b/src/ledger_assert.c
index d39b76811..fa7022e62 100644
--- a/src/ledger_assert.c
+++ b/src/ledger_assert.c
@@ -35,6 +35,13 @@
 static char assert_buffer[ASSERT_BUFFER_LEN];
 #endif
 
+#if defined(HAVE_PRINTF)
+void assert_print_failed(void)
+{
+    PRINTF("LEDGER_ASSERT FAILED\n");
+}
+#endif
+
 #if defined(HAVE_LEDGER_ASSERT_DISPLAY) && defined(LEDGER_ASSERT_CONFIG_LR_AND_PC_INFO)
 void assert_display_lr_and_pc(int lr, int pc)
 {