diff --git a/libc/upstream-openbsd/android/include/openbsd-compat.h b/libc/upstream-openbsd/android/include/openbsd-compat.h
index b408390..19f28ad 100644
--- a/libc/upstream-openbsd/android/include/openbsd-compat.h
+++ b/libc/upstream-openbsd/android/include/openbsd-compat.h
@@ -49,7 +49,6 @@
 #endif
 
 __LIBC_HIDDEN__ extern char* __findenv(const char*, int, int*);
-__LIBC_HIDDEN__ extern char* _mktemp(char*);
 
 // Only OpenBSD has this at the moment, and we're more likely to just say
 // "malloc is always calloc", so we don't expose this as libc API.