diff --git a/third-party/execvpe/execvpe.c b/third-party/execvpe/execvpe.c
index c0d1583cc..e0173a47c 100644
--- a/third-party/execvpe/execvpe.c
+++ b/third-party/execvpe/execvpe.c
@@ -17,7 +17,9 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#ifdef __linux__
 #include <alloca.h>
+#endif /* __linux */
 #include <unistd.h>
 #include <stdarg.h>
 #include <stdbool.h>