diff --git a/nbio/Makefile b/nbio/Makefile
index 39f1c51092..cb5d46fa28 100644
--- a/nbio/Makefile
+++ b/nbio/Makefile
@@ -3,7 +3,7 @@ TARGET := nbio_test
 SOURCES := $(wildcard *.c)
 OBJS := $(SOURCES:.c=.o)
 
-CFLAGS += -Wall -pedantic -std=gnu99 -O0 -g -I../../include
+CFLAGS += -Wall -pedantic -std=gnu99 -O0 -g -I../libretro-sdk/include
 
 all: $(TARGET)
 
diff --git a/nbio/nbio.h b/nbio/nbio.h
index c0e946f82e..2da6edc9d0 100644
--- a/nbio/nbio.h
+++ b/nbio/nbio.h
@@ -1,5 +1,5 @@
-#include <stddef.h> /* size_t */
-#include <stdbool.h> /* bool */
+#include <stddef.h>
+#include <boolean.h>
 
 enum nbio_mode_t {
 	/* The comments tell which mode in fopen() it corresponds to. */