--- a/Modules/_ctypes/malloc_closure.c
+++ b/Modules/_ctypes/malloc_closure.c
@@ -70,7 +70,7 @@
 #else
     item = (ITEM *)mmap(NULL,
                         count * sizeof(ITEM),
-                        PROT_READ | PROT_WRITE | PROT_EXEC,
+                        PROT_READ | PROT_WRITE,
                         MAP_PRIVATE | MAP_ANONYMOUS,
                         -1,
                         0);