diff --git a/src/kprint/kvprintf.c b/src/kprint/kvprintf.c
index 0cc7d22..29da473 100644
--- a/src/kprint/kvprintf.c
+++ b/src/kprint/kvprintf.c
@@ -5,7 +5,7 @@
 #include <stdarg.h>
 #include <stdint.h>
 
-int print_int_base(int32_t number, const char *prefix, const char *base);
+int print_int_base(int64_t number, const char *prefix, const char *base);
 
 static int get_level(const char *str)
 {
@@ -20,17 +20,17 @@ static int print_flag(char flag, va_list *ap)
 	case '%':
 		return terminal_putchar('%');
 	case 'i':
-		return print_int_base(va_arg(*ap, int), NULL, BASE_DECA);
+		return print_int_base(va_arg(*ap, int32_t), NULL, BASE_DECA);
 	case 'd':
-		return print_int_base(va_arg(*ap, int), NULL, BASE_DECA);
+		return print_int_base(va_arg(*ap, int32_t), NULL, BASE_DECA);
 	case 'c':
 		return terminal_putchar(va_arg(*ap, int));
 	case 's':
 		return terminal_writestring(va_arg(*ap, char *));
 	case 'p':
-		return print_int_base(va_arg(*ap, int), "0x", BASE_HEXA);
+		return print_int_base(va_arg(*ap, uint32_t), "0x", BASE_HEXA);
 	case 'x':
-		return print_int_base(va_arg(*ap, int), "0x", BASE_HEXA);
+		return print_int_base(va_arg(*ap, int32_t), "0x", BASE_HEXA);
 	case 'u':
 		return print_int_base(va_arg(*ap, uint32_t), NULL, BASE_DECA);
 	}
diff --git a/src/kprint/print_int_base.c b/src/kprint/print_int_base.c
index e285827..59dd345 100644
--- a/src/kprint/print_int_base.c
+++ b/src/kprint/print_int_base.c
@@ -3,7 +3,7 @@
 #include "string.h"
 #include "terminal.h"
 
-int print_int_base(int32_t number, const char *prefix, const char *base)
+int print_int_base(int64_t number, const char *prefix, const char *base)
 {
 	const int base_size = strlen(base);
 	uint64_t div = 1;