diff --git a/build.sh b/build.sh
index 9c3720f..211112d 100755
--- a/build.sh
+++ b/build.sh
@@ -91,7 +91,7 @@ if [ $debug = 1 ];
 then
 	echo "[debug]"
 	CFLAGS="${CFLAGS} -DDEBUG -Wpedantic -Wshadow -Wextra -Werror=implicit-int -Werror=incompatible-pointer-types -Werror=int-conversion -Wvla -g -Og -fsanitize=address -fsanitize=undefined"
-	CORE='src/uxn.c'
+	CORE='src/uxn-fast.c'
 else
 	CFLAGS="${CFLAGS} -DNDEBUG -O2 -g0 -s"
 	CORE='src/uxn-fast.c'
diff --git a/src/uxnemu.c b/src/uxnemu.c
index e24524f..3408734 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -70,7 +70,6 @@ console_input(Uxn *u, char c)
 	return uxn_eval(u, PEEK16(d));
 }
 
-
 static void
 console_deo(Uint8 *d, Uint8 port)
 {