diff --git a/src/opts.c b/src/opts.c
index c998a44..0674e7d 100644
--- a/src/opts.c
+++ b/src/opts.c
@@ -5,8 +5,9 @@
 #include <stdlib.h>
 
 #include "error.h"
+#include "util/intdef.h"
 
-uint8_t getoptions(int32_t argc, char *const *argv, int32_t *ncpus) {
+u8 getoptions(int argc, char *const *argv, int *ncpus) {
 	uint8_t opts = 0;
 	char opt;
 
diff --git a/src/opts.h b/src/opts.h
index 7568c9a..424b44f 100644
--- a/src/opts.h
+++ b/src/opts.h
@@ -1,6 +1,8 @@
 #pragma once
 #include <stdint.h>
 
+#include "util/intdef.h"
+
 enum opt {
 	OPT_LIST_CORES = 1, // option that lists the total amount of cores that are set
 	OPT_SET_ALL = 2,    // option to set all cores, regardless of their assumed state
@@ -8,4 +10,4 @@ enum opt {
 	OPT_INVERT = 8,     // 'num' now represents the amount of cores to disable
 };
 
-uint8_t getoptions(int32_t, char *const *, int32_t *);
+u8 getoptions(int argc, char *const *argv, int *ncpus);