diff --git a/firmware/applications/tester.c b/firmware/applications/tester.c
index 667b335..d494e42 100644
--- a/firmware/applications/tester.c
+++ b/firmware/applications/tester.c
@@ -16,3 +16,5 @@ void main_tester(void) {
     handleMenu(&mainmenu);
     gotoISP();
 };
+
+void tick_tester(void);
diff --git a/simulat0r/gui/qsimulat0r.cc b/simulat0r/gui/qsimulat0r.cc
index 21d57b2..e8bbb5c 100644
--- a/simulat0r/gui/qsimulat0r.cc
+++ b/simulat0r/gui/qsimulat0r.cc
@@ -100,7 +100,7 @@ public:
     for (int x = 0; x < dimx; ++x) {
       for(int y=0; y<dimy; ++y) {
 	int color;
-	color=lcdGetPixel((GLOBAL(lcdmirror) /* LCD_MIRRORX */ )?(RESX-x-1):x,( 1 /* LCD_MIRRORY */)?(RESY-y-1):y)?colorInvertedPixelOn:colorInvertedPixelOff;
+	color=lcdGetPixel((GLOBAL(lcdmirror) /* LCD_MIRRORX */ )?(RESX-x-1):x,( 0 /* LCD_MIRRORY */)?(RESY-y-1):y)?pixelOn:pixelOff;
 	
 	for(int minix=0; minix<pixw; ++minix) {
 	  for(int miniy=0; miniy<pixh; ++miniy) {
diff --git a/simulat0r/tui/Makefile b/simulat0r/tui/Makefile
index 6d798d8..a66ec02 100644
--- a/simulat0r/tui/Makefile
+++ b/simulat0r/tui/Makefile
@@ -9,11 +9,8 @@ CFLAGS += -I../simcore
 OBJS+= ../firmware/basic/*.o
 OBJS+= ../firmware/core/*.o
 OBJS+= ../firmware/core/*/*.o
-LDFLAGS+= -L../firmware/applications
 LIBS+= ../firmware/applications/libapp.a
-LDFLAGS+= -L../firmware/lcd
 LIBS+= ../firmware/lcd/liblcd.a
-LDFLAGS+= -L../firmware/usb
 LIBS+= ../firmware/usb/libusb.a
 
 #LIBS += -lm
@@ -27,10 +24,13 @@ LIBS += ../firmware/basic/libbasic.a
 
 OBJS+=../simcore/simcore.o ../simcore/misc.o ../simcore/timecounter.o
 
+OBJS += simulat0r.o
+
 .PHONY : all
 all : simulat0r
 
-simulat0r : simulat0r.o $(OBJS) $(LIBS) 
+simulat0r : $(OBJS) $(LIBS)
+	$(LD) $(OBJS) $(LIBS) -lc -o $@
 
 clean:
 	$(RM) simulat0r.o
diff --git a/simulat0r/tui/simulat0r.c b/simulat0r/tui/simulat0r.c
index 8c4fbf1..9eaced4 100644
--- a/simulat0r/tui/simulat0r.c
+++ b/simulat0r/tui/simulat0r.c
@@ -12,7 +12,7 @@ void simlcdDisplayUpdate() {
 
   for(int y=0; y<RESY; ++y) {
     for(int x=0; x<RESX; ++x) {
-      write(1,(lcdGetPixel((GLOBAL(lcdmirror) /* LCD_MIRRORX */ )?(RESX-x-1):x,(1 /* & LCD_MIRRORY */)?(RESY-y-1):y)?symbolOn:symbolOff),1);
+      write(1,(lcdGetPixel((GLOBAL(lcdmirror) /* LCD_MIRRORX */ )?(RESX-x-1):x,(0 /* & LCD_MIRRORY */)?(RESY-y-1):y)?symbolOn:symbolOff),1);
     }
       write(1,("\n"),1);
   }