diff --git a/src/linux/frida-helper-backend.vala b/src/linux/frida-helper-backend.vala
index f24f74ffa..b6b3d0f67 100644
--- a/src/linux/frida-helper-backend.vala
+++ b/src/linux/frida-helper-backend.vala
@@ -2286,7 +2286,7 @@ namespace Frida {
 		public async ProcessCodeSwapScope (SeizeSession session, uint8[] code, Cancellable? cancellable) throws Error, IOError {
 			this.session = session;
 
-			Gum.Linux.enumerate_ranges ((Posix.pid_t) session.pid, READ | EXECUTE, d => {
+			Gum.Linux.enumerate_ranges ((Posix.pid_t) session.pid, READ | WRITE | EXECUTE, d => {
 				if (d.range.size >= code.length) {
 					code_start = d.range.base_address + d.range.size - round_size_to_page_size (code.length);
 					code_end = code_start + code.length;