diff --git a/src/object.c b/src/object.c
index f9122b741..3d747ea3a 100644
--- a/src/object.c
+++ b/src/object.c
@@ -856,8 +856,10 @@ void dismissGCRAObject(robj *o, size_t size_hint) {
  * it can reduce unnecessary iteration for complex data types that are probably
  * not going to release any memory. */
 void dismissObject(robj *o, size_t size_hint) {
-    /* madvise(MADV_DONTNEED) may not work if Transparent Huge Pages is enabled. */
-    if (server.thp_enabled) return;
+    /* madvise(MADV_DONTNEED) may not work if Transparent Huge Pages is enabled.
+     * Strings use sdsfree() which doesn't depend on madvise, so skip this
+     * check for them. */
+    if (server.thp_enabled && o->type != OBJ_STRING) return;
 
     /* Currently we use zmadvise_dontneed only when we use jemalloc with Linux.
      * so we avoid these pointless loops when they're not going to do anything. */