diff --git a/reactos/subsys/system/explorer/shell/mainframe.cpp b/reactos/subsys/system/explorer/shell/mainframe.cpp
index e420cbee336..29b6cae3d3e 100644
--- a/reactos/subsys/system/explorer/shell/mainframe.cpp
+++ b/reactos/subsys/system/explorer/shell/mainframe.cpp
@@ -59,7 +59,7 @@ MainFrame::MainFrame(HWND hwnd)
 #endif
 
 	TBBUTTON toolbarBtns[] = {
-		{0, 0, 0, TBSTYLE_SEP, {0, 0}, 0, 0},
+		{0, 0, 0, BTNS_SEP, {0, 0}, 0, 0},
 		{0, ID_WINDOW_NEW, TBSTATE_ENABLED, BTNS_BUTTON, {0, 0}, 0, 0},
 		{1, ID_WINDOW_CASCADE, TBSTATE_ENABLED, BTNS_BUTTON, {0, 0}, 0, 0},
 		{2, ID_WINDOW_TILE_HORZ, TBSTATE_ENABLED, BTNS_BUTTON, {0, 0}, 0, 0},
@@ -75,7 +75,7 @@ MainFrame::MainFrame(HWND hwnd)
 	CheckMenuItem(_menu_info._hMenuOptions, ID_VIEW_TOOL_BAR, MF_BYCOMMAND|MF_CHECKED);
 
 
-	TBBUTTON drivebarBtn = {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP, {0, 0}, 0, 0};
+	TBBUTTON drivebarBtn = {0, 0, TBSTATE_ENABLED, BTNS_SEP, {0, 0}, 0, 0};
 	int btn = 1;
 	PTSTR p;
 
diff --git a/reactos/subsys/system/explorer/utility/utility.h b/reactos/subsys/system/explorer/utility/utility.h
index d233c66e17d..c9d23b68a18 100644
--- a/reactos/subsys/system/explorer/utility/utility.h
+++ b/reactos/subsys/system/explorer/utility/utility.h
@@ -46,7 +46,8 @@
 
 
 #ifndef BTNS_BUTTON
-#define BTNS_BUTTON TBSTYLE_BUTTON //@@ -> wingw headers
+#define BTNS_BUTTON TBSTYLE_BUTTON //TODO: should be in mingw headers
+#define BTNS_SEP TBSTYLE_SEP
 #endif
 
 
diff --git a/reactos/subsys/system/explorer/winefile/winefile.c b/reactos/subsys/system/explorer/winefile/winefile.c
index c18d7c5dc2f..95a7b470088 100644
--- a/reactos/subsys/system/explorer/winefile/winefile.c
+++ b/reactos/subsys/system/explorer/winefile/winefile.c
@@ -3538,7 +3538,7 @@ void explorer_show_frame(HWND hwndParent, int cmdshow)
 
 
 	{
-		TBBUTTON drivebarBtn = {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP, {0, 0}, 0, 0};
+		TBBUTTON drivebarBtn = {0, 0, TBSTATE_ENABLED, BTNS_SEP, {0, 0}, 0, 0};
 		int btn = 1;
 		PTSTR p;
 
@@ -3599,7 +3599,7 @@ void explorer_show_frame(HWND hwndParent, int cmdshow)
 
 	{
 		TBBUTTON toolbarBtns[] = {
-			{0, 0, 0, TBSTYLE_SEP, {0, 0}, 0, 0},
+			{0, 0, 0, BTNS_SEP, {0, 0}, 0, 0},
 			{0, ID_WINDOW_NEW, TBSTATE_ENABLED, BTNS_BUTTON, {0, 0}, 0, 0},
 			{1, ID_WINDOW_CASCADE, TBSTATE_ENABLED, BTNS_BUTTON, {0, 0}, 0, 0},
 			{2, ID_WINDOW_TILE_HORZ, TBSTATE_ENABLED, BTNS_BUTTON, {0, 0}, 0, 0},
diff --git a/reactos/subsys/system/explorer/winefile/winefile.h b/reactos/subsys/system/explorer/winefile/winefile.h
index 99919859d5c..0fa34f88ccb 100644
--- a/reactos/subsys/system/explorer/winefile/winefile.h
+++ b/reactos/subsys/system/explorer/winefile/winefile.h
@@ -62,6 +62,7 @@
 
 #ifndef BTNS_BUTTON
 #define BTNS_BUTTON TBSTYLE_BUTTON
+#define BTNS_SEP TBSTYLE_SEP
 #endif