diff --git a/src/stdlib/strtod.c b/src/stdlib/strtod.c
index 1886efa..f923f38 100644
--- a/src/stdlib/strtod.c
+++ b/src/stdlib/strtod.c
@@ -2,6 +2,7 @@
 #include "shgetc.h"
 #include "floatscan.h"
 #include "stdio_impl.h"
+#include "libc.h"
 
 static long double strtox(const char *s, char **p, int prec)
 {
@@ -30,3 +31,5 @@ long double strtold(const char *s, char **p)
 {
 	return strtox(s, p, 2);
 }
+
+weak_alias(strtod, __strtod_internal);
diff --git a/src/stdlib/strtol.c b/src/stdlib/strtol.c
index 4a949cb..490cf21 100644
--- a/src/stdlib/strtol.c
+++ b/src/stdlib/strtol.c
@@ -1,6 +1,7 @@
 #include "stdio_impl.h"
 #include "intscan.h"
 #include "shgetc.h"
+#include "libc.h"
 
 static unsigned long long strtox(const char *s, char **p, int base, unsigned long long lim)
 {
@@ -51,3 +52,8 @@ uintmax_t strtoumax(const char *s, char **p, int base)
 {
 	return strtoull(s, p, base);
 }
+
+weak_alias(strtoll, __strtoll_internal);
+weak_alias(strtol, __strtol_internal);
+weak_alias(strtoul, __strtoul_internal);
+weak_alias(strtoull, __strtoull_internal);