diff --git a/Makefile b/Makefile
index 9e12564..9567edf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,10 @@
 LDFLAGS = $(shell pkg-config --libs sdl2 r_util r_io)
 CFLAGS = -Wall -I include/ $(shell pkg-config --cflags sdl2 r_util r_io)
 
+all: sdl/pixbuf.o io/timers.o
+
+sdl/pixbuf.o:
+	gcc -c sdl/pixbuf.c -o sdl/pixbuf.o $(CFLAGS)
+
 io/timers.o:
 	gcc -c io/timers.c -o io/timers.o $(CFLAGS)
diff --git a/sdl/pixbuf.c b/sdl/pixbuf.c
index c1d9bf2..3c62273 100644
--- a/sdl/pixbuf.c
+++ b/sdl/pixbuf.c
@@ -19,7 +19,7 @@ GBPixBuf *gb_pix_buf_new (SDL_Renderer *renderer, ut16 w, ut16 h) {
 	}
 	pb->texture = SDL_CreateTexture (renderer, SDL_PIXELFORMAT_ARGB32,
 		SDL_TEXTUREACCESS_TARGET, w, h);
-	if (!texture) {
+	if (!pb->texture) {
 		free (pb->buf);
 		free (pb);
 		return NULL;
@@ -46,7 +46,7 @@ void gb_pix_buf_set_pixel (GBPixBuf *pb, ut16 x, ut16 y, ut8 pixval) {
 	const ut32 bytepos = bitpos >> 3;
 	const ut32 shl = bitpos & 0x6;
 	pixval = pixval & 0x3;
-	const ut8 mask = ~(0x3 << shl)
+	const ut8 mask = ~(0x3 << shl);
 	pb->buf[bytepos] = (pb->buf[bytepos] & mask) | (pixval << shl);
 	SDL_Texture *target = SDL_GetRenderTarget (pb->renderer);
 	SDL_SetRenderTarget (pb->renderer, pb->texture);