diff --git a/src/platforms/posix/px4_layer/px4_log.c b/src/platforms/posix/px4_layer/px4_log.c
index b0cfb4c087..074ae8b466 100644
--- a/src/platforms/posix/px4_layer/px4_log.c
+++ b/src/platforms/posix/px4_layer/px4_log.c
@@ -1,13 +1,16 @@
 #include <stdlib.h>
 #include <px4_log.h>
+#ifdef __PX4_POSIX
 #include <execinfo.h>
+#endif
 
 __EXPORT int __px4_log_level_current = PX4_LOG_LEVEL_AT_RUN_TIME;
 
-__EXPORT const char *__px4_log_level_str[_PX4_LOG_LEVEL_PANIC+1] = { "INFO", "DEBUG", "WARN", "ERROR", "PANIC" };
+__EXPORT const char *__px4_log_level_str[_PX4_LOG_LEVEL_PANIC + 1] = { "INFO", "DEBUG", "WARN", "ERROR", "PANIC" };
 
 void px4_backtrace()
 {
+#ifdef __PX4_POSIX
 	void *buffer[10];
 	char **callstack;
 	int bt_size;
@@ -16,11 +19,12 @@ void px4_backtrace()
 	bt_size = backtrace(buffer, 10);
 	callstack = backtrace_symbols(buffer, bt_size);
 
-	PX4_INFO("Backtrace:", bt_size);
+	PX4_INFO("Backtrace: %d", bt_size);
 
-	for(idx=0; idx < bt_size; idx++)
+	for (idx = 0; idx < bt_size; idx++) {
 		PX4_INFO("%s", callstack[idx]);
+	}
 
 	free(callstack);
+#endif
 }
-