3 files changed, 11 insertions, 6 deletions
diff --git a/drivers/winmidi/SCsub b/drivers/winmidi/SCsub
index 233593b0f9..4c24925192 100644
--- a/drivers/winmidi/SCsub
+++ b/drivers/winmidi/SCsub
@@ -4,5 +4,3 @@ Import('env')
 
 # Driver source files
 env.add_source_files(env.drivers_sources, "*.cpp")
-
-Export('env')
diff --git a/drivers/winmidi/win_midi.cpp b/drivers/winmidi/win_midi.cpp
index 6da6e31b2b..1d4bf1a1e2 100644
--- a/drivers/winmidi/win_midi.cpp
+++ b/drivers/winmidi/win_midi.cpp
@@ -31,7 +31,8 @@
 #ifdef WINMIDI_ENABLED
 
 #include "win_midi.h"
-#include "print_string.h"
+
+#include "core/print_string.h"
 
 void MIDIDriverWinMidi::read(HMIDIIN hMidiIn, UINT wMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2) {
 
@@ -53,6 +54,12 @@ Error MIDIDriverWinMidi::open() {
 			char err[256];
 			midiInGetErrorText(res, err, 256);
 			ERR_PRINTS("midiInOpen error: " + String(err));
+
+			MIDIINCAPS caps;
+			res = midiInGetDevCaps(i, &caps, sizeof(MIDIINCAPS));
+			if (res == MMSYSERR_NOERROR) {
+				ERR_PRINTS("Can't open MIDI device \"" + String(caps.szPname) + "\", is it being used by another application?");
+			}
 		}
 	}
 
diff --git a/drivers/winmidi/win_midi.h b/drivers/winmidi/win_midi.h
index 1cf9b19b5d..87a349d5d1 100644
--- a/drivers/winmidi/win_midi.h
+++ b/drivers/winmidi/win_midi.h
@@ -33,14 +33,14 @@
 #ifndef WIN_MIDI_H
 #define WIN_MIDI_H
 
+#include "core/os/midi_driver.h"
+#include "core/vector.h"
+
 #include <stdio.h>
 #include <windows.h>
 
 #include <mmsystem.h>
 
-#include "core/vector.h"
-#include "os/midi_driver.h"
-
 class MIDIDriverWinMidi : public MIDIDriver {
 
 	Vector<HMIDIIN> connected_sources;