diff --git a/compiler/builtins/bitcode/src/dict.zig b/compiler/builtins/bitcode/src/dict.zig
index 6b038f6ffe..2780652f1b 100644
--- a/compiler/builtins/bitcode/src/dict.zig
+++ b/compiler/builtins/bitcode/src/dict.zig
@@ -791,9 +791,7 @@ pub fn dictWalk(
 
                 caller(data, key, value, b2, b1);
 
-                const temp = b1;
-                b2 = b1;
-                b1 = temp;
+                std.mem.swap([*]u8, &b1, &b2);
             },
             else => {},
         }
diff --git a/compiler/builtins/bitcode/src/list.zig b/compiler/builtins/bitcode/src/list.zig
index 61af7031d0..b4b8a17217 100644
--- a/compiler/builtins/bitcode/src/list.zig
+++ b/compiler/builtins/bitcode/src/list.zig
@@ -542,9 +542,7 @@ pub fn listWalk(
             const element = source_ptr + i * element_width;
             caller(data, element, b2, b1);
 
-            const temp = b1;
-            b2 = b1;
-            b1 = temp;
+            std.mem.swap([*]u8, &b1, &b2);
         }
     }
 
@@ -591,9 +589,7 @@ pub fn listWalkBackwards(
             const element = source_ptr + i * element_width;
             caller(data, element, b2, b1);
 
-            const temp = b1;
-            b2 = b1;
-            b1 = temp;
+            std.mem.swap([*]u8, &b1, &b2);
         }
     }