diff --git a/libc/calls/fexecve.c b/libc/calls/fexecve.c
index 0a5791243..c2b5b208c 100644
--- a/libc/calls/fexecve.c
+++ b/libc/calls/fexecve.c
@@ -233,7 +233,7 @@ int fexecve(int fd, char *const argv[], char *const envp[]) {
       size_t numenvs;
       for (numenvs = 0; envp[numenvs];) ++numenvs;
       const size_t desenvs = min(500, max(numenvs + 1, 2));
-      char *envs[500];
+      static _Thread_local char *envs[500];
       memcpy(envs, envp, numenvs * sizeof(char *));
       envs[numenvs] = path;
       envs[numenvs + 1] = NULL;