diff --git a/lib/accel/accel_engine.c b/lib/accel/accel_engine.c
index 72c813174..e1341424c 100644
--- a/lib/accel/accel_engine.c
+++ b/lib/accel/accel_engine.c
@@ -28,7 +28,7 @@
 #define MAX_TASKS_PER_CHANNEL		0x800
 
 /* Largest context size for all accel modules */
-static size_t g_max_accel_module_size = 0;
+static size_t g_max_accel_module_size = sizeof(struct spdk_accel_task);
 
 static struct spdk_accel_module_if *g_accel_engine_module = NULL;
 static spdk_accel_fini_cb g_fini_cb_fn = NULL;
diff --git a/module/accel/dsa/accel_engine_dsa.c b/module/accel/dsa/accel_engine_dsa.c
index 20da2f424..be87b5257 100644
--- a/module/accel/dsa/accel_engine_dsa.c
+++ b/module/accel/dsa/accel_engine_dsa.c
@@ -286,7 +286,7 @@ idxd_poll(void *arg)
 static size_t
 accel_engine_dsa_get_ctx_size(void)
 {
-	return 0;
+	return sizeof(struct spdk_accel_task);
 }
 
 static bool
diff --git a/module/accel/iaa/accel_engine_iaa.c b/module/accel/iaa/accel_engine_iaa.c
index 15767a085..e13f1b8c6 100644
--- a/module/accel/iaa/accel_engine_iaa.c
+++ b/module/accel/iaa/accel_engine_iaa.c
@@ -230,7 +230,7 @@ idxd_poll(void *arg)
 static size_t
 accel_engine_iaa_get_ctx_size(void)
 {
-	return 0;
+	return sizeof(struct spdk_accel_task);
 }
 
 static bool
diff --git a/module/accel/ioat/accel_engine_ioat.c b/module/accel/ioat/accel_engine_ioat.c
index 159269d84..23c9af64a 100644
--- a/module/accel/ioat/accel_engine_ioat.c
+++ b/module/accel/ioat/accel_engine_ioat.c
@@ -76,7 +76,7 @@ static int ioat_submit_tasks(struct spdk_io_channel *ch, struct spdk_accel_task
 static size_t
 accel_engine_ioat_get_ctx_size(void)
 {
-	return 0;
+	return sizeof(struct spdk_accel_task);
 }
 
 static struct spdk_accel_module_if g_ioat_module = {