diff --git a/src/InternPool.zig b/src/InternPool.zig
index 7df03f7dca76b86b765068a22f9e150d0f537e7b..aef6f6f036d13e50925662d7ddfbcab37d978de7 100644
--- a/src/InternPool.zig
+++ b/src/InternPool.zig
@@ -7899,7 +7899,7 @@ pub fn get(ip: *InternPool, gpa: Allocator, io: Io, tid: Zcu.PerThread.Id, key:
 
             repeated: {
                 switch (aggregate.storage) {
-                    .bytes => |bytes| for (bytes.toSlice(len, ip)[1..]) |byte|
+                    .bytes => |bytes| for (bytes.toSlice(len_including_sentinel, ip)[1..]) |byte|
                         if (byte != bytes.at(0, ip)) break :repeated,
                     .elems => |elems| for (elems[1..@intCast(len_including_sentinel)]) |elem|
                         if (elem != elems[0]) break :repeated,
diff --git a/test/behavior/comptime_memory.zig b/test/behavior/comptime_memory.zig
index f72669473778d517cad3200d88fd304d25c4a92a..e88fe23c86c294627dad536044be9528416edd1d 100644
--- a/test/behavior/comptime_memory.zig
+++ b/test/behavior/comptime_memory.zig
@@ -618,3 +618,13 @@ test "comptime store to sentinel-terminated array in an extern struct" {
         assert(x.a[2] == 0);
     }
 }
+
+test "comptime store to repeated string bytes" {
+    comptime {
+        var x = "aa".*;
+        x[0] = 'b';
+        assert(x[0] == 'b');
+        assert(x[1] == 'a');
+        assert(x[2] == 0);
+    }
+}