diff --git a/src/gruvin9x/diskio.cpp b/src/gruvin9x/diskio.cpp
index 6e7bbaff5..3723ffed6 100644
--- a/src/gruvin9x/diskio.cpp
+++ b/src/gruvin9x/diskio.cpp
@@ -38,7 +38,7 @@
 /* are platform dependent.                                               */
 /*-----------------------------------------------------------------------*/
 
-#include "open9x.h"
+#include "../open9x.h"
 #include "diskio.h"
 
 /* Definitions for MMC/SDC command */
diff --git a/src/gruvin9x/logs.cpp b/src/gruvin9x/logs.cpp
index 75805d2e8..19cb3add2 100644
--- a/src/gruvin9x/logs.cpp
+++ b/src/gruvin9x/logs.cpp
@@ -31,7 +31,7 @@
  *
  */
 
-#include "open9x.h"
+#include "../open9x.h"
 #include "ff.h"
 
 char g_logFilename[21]; // "/O9XLOGS/M00_000.CSV\0" max required length = 21
diff --git a/src/gruvin9x/rtc.cpp b/src/gruvin9x/rtc.cpp
index c11642107..1c0261164 100644
--- a/src/gruvin9x/rtc.cpp
+++ b/src/gruvin9x/rtc.cpp
@@ -35,7 +35,7 @@
 /*--------------------------------------------------------------------------*/
 /*  RTC controls                                                            */
 
-#include "open9x.h"
+#include "../open9x.h"
 
 #define SCL_LOW()	DDRD |=	0x01		/* SCL = LOW */
 #define SCL_HIGH()	DDRD &=	~0x01		/* SCL = High-Z */
diff --git a/src/open9x.h b/src/open9x.h
index 7af5c195e..1ce05349b 100644
--- a/src/open9x.h
+++ b/src/open9x.h
@@ -42,8 +42,8 @@
 #include <stddef.h>
 
 #if defined(PCBV4)
-#include "ff.h"
-#include "gtime.h"
+#include "gruvin9x/ff.h"
+#include "gruvin9x/gtime.h"
 #endif
 
 #if defined(SIMU)
@@ -705,7 +705,7 @@ inline void _beep(uint8_t b) {
 
 // MM/SD card Disk IO Support
 #if defined (PCBV4)
-#include "rtc.h"
+#include "gruvin9x/rtc.h"
 extern void disk_timerproc(void);
 extern gtime_t g_unixTime; // global unix timestamp -- hold current time in seconds since 1970-01-01 00:00:00
 extern uint8_t g_ms100; // defined in drivers.cpp