diff --git a/libc/bionic/strtoll_l.cpp b/libc/bionic/strtoll_l.cpp
index 05fb76083..47b126e05 100644
--- a/libc/bionic/strtoll_l.cpp
+++ b/libc/bionic/strtoll_l.cpp
@@ -28,6 +28,6 @@
 
 #include <stdlib.h>
 
-long long strtoll_l(const char *nptr, char **endptr, size_t base, locale_t) {
+long long strtoll_l(const char *nptr, char **endptr, int base, locale_t) {
   return strtoll(nptr, endptr, base);
 }
diff --git a/libc/bionic/strtoull_l.cpp b/libc/bionic/strtoull_l.cpp
index ba0bc6ad4..398ba0e94 100644
--- a/libc/bionic/strtoull_l.cpp
+++ b/libc/bionic/strtoull_l.cpp
@@ -28,7 +28,7 @@
 
 #include <stdlib.h>
 
-unsigned long long strtoull_l(const char *nptr, char **endptr, size_t base,
+unsigned long long strtoull_l(const char *nptr, char **endptr, int base,
                               locale_t) {
   return strtoull(nptr, endptr, base);
 }
diff --git a/libc/bionic/wchar.cpp b/libc/bionic/wchar.cpp
index 524ba07e7..e0879b9df 100644
--- a/libc/bionic/wchar.cpp
+++ b/libc/bionic/wchar.cpp
@@ -230,13 +230,13 @@ size_t wcsxfrm_l(wchar_t *dest, const wchar_t *src, size_t n, locale_t) {
   return wcsxfrm(dest, src, n);
 }
 
-long long wcstoll_l(const wchar_t *nptr, wchar_t **endptr, size_t base,
+long long wcstoll_l(const wchar_t *nptr, wchar_t **endptr, int base,
                     locale_t) {
   return wcstoll(nptr, endptr, base);
 }
 
 unsigned long long wcstoull_l(const wchar_t *nptr, wchar_t **endptr,
-                              size_t base, locale_t) {
+                              int base, locale_t) {
   return wcstoull(nptr, endptr, base);
 }
 
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 80a65789c..fd2bf6c57 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -83,8 +83,8 @@ extern float strtof(const char*, char**) __LIBC_ABI_PUBLIC__;
 extern long double strtold(const char*, char**) __LIBC_ABI_PUBLIC__;
 
 extern long double strtold_l(const char *, char **, locale_t) __LIBC_ABI_PUBLIC__;
-extern long long strtoll_l(const char *, char **, size_t, locale_t) __LIBC_ABI_PUBLIC__;
-extern unsigned long long strtoull_l(const char *, char **, size_t, locale_t) __LIBC_ABI_PUBLIC__;
+extern long long strtoll_l(const char *, char **, int, locale_t) __LIBC_ABI_PUBLIC__;
+extern unsigned long long strtoull_l(const char *, char **, int, locale_t) __LIBC_ABI_PUBLIC__;
 
 extern int atoi(const char*) __purefunc;
 extern long atol(const char*) __purefunc;
diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index ae10d93e6..10a78b897 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -151,8 +151,8 @@ extern wchar_t          *wmemset(wchar_t *, wchar_t, size_t);
 extern int               wprintf(const wchar_t *, ...);
 extern int               wscanf(const wchar_t *, ...);
 
-extern long long          wcstoll_l(const wchar_t *, wchar_t **, size_t, locale_t);
-extern unsigned long long wcstoull_l(const wchar_t *, wchar_t **, size_t, locale_t);
+extern long long          wcstoll_l(const wchar_t *, wchar_t **, int, locale_t);
+extern unsigned long long wcstoull_l(const wchar_t *, wchar_t **, int, locale_t);
 extern long double        wcstold_l(const wchar_t *, wchar_t **, locale_t );
 
 extern int    wcscoll_l(const wchar_t *, const wchar_t *, locale_t);