diff --git a/include/os/linux/spl/sys/kmem_cache.h b/include/os/linux/spl/sys/kmem_cache.h
index f152f62633..a659df8ed5 100644
--- a/include/os/linux/spl/sys/kmem_cache.h
+++ b/include/os/linux/spl/sys/kmem_cache.h
@@ -38,7 +38,6 @@
 typedef enum kmc_bit {
 	KMC_BIT_NODEBUG		= 1,	/* Default behavior */
 	KMC_BIT_NOMAGAZINE	= 2,	/* XXX: Unsupported */
-	KMC_BIT_QCACHE		= 4,	/* XXX: Unsupported */
 	KMC_BIT_KMEM		= 5,	/* Use kmem cache */
 	KMC_BIT_VMEM		= 6,	/* Use vmem cache */
 	KMC_BIT_KVMEM		= 7,	/* Use kvmalloc linux allocator  */
@@ -63,7 +62,6 @@ typedef enum kmem_cbrc {
 
 #define	KMC_NODEBUG		(1 << KMC_BIT_NODEBUG)
 #define	KMC_NOMAGAZINE		(1 << KMC_BIT_NOMAGAZINE)
-#define	KMC_QCACHE		(1 << KMC_BIT_QCACHE)
 #define	KMC_KMEM		(1 << KMC_BIT_KMEM)
 #define	KMC_VMEM		(1 << KMC_BIT_VMEM)
 #define	KMC_KVMEM		(1 << KMC_BIT_KVMEM)
diff --git a/module/os/linux/spl/spl-kmem-cache.c b/module/os/linux/spl/spl-kmem-cache.c
index 8a4a15075d..d3afcd54dd 100644
--- a/module/os/linux/spl/spl-kmem-cache.c
+++ b/module/os/linux/spl/spl-kmem-cache.c
@@ -721,7 +721,6 @@ spl_magazine_destroy(spl_kmem_cache_t *skc)
  *	KMC_KVMEM       Force kvmem backed SPL cache
  *	KMC_SLAB        Force Linux slab backed cache
  *	KMC_NODEBUG	Disable debugging (unsupported)
- *	KMC_QCACHE	Disable qcache (unsupported)
  *	KMC_NOMAGAZINE	Enabled for kmem/vmem, Disabled for Linux slab
  */
 spl_kmem_cache_t *
@@ -737,7 +736,6 @@ spl_kmem_cache_create(char *name, size_t size, size_t align,
 	 * Unsupported flags
 	 */
 	ASSERT0(flags & KMC_NOMAGAZINE);
-	ASSERT0(flags & KMC_QCACHE);
 	ASSERT(vmp == NULL);
 	ASSERT(reclaim == NULL);