diff --git a/spa/plugins/jack/jack-sink.c b/spa/plugins/jack/jack-sink.c
index bb3b2abe4..794fffbb9 100644
--- a/spa/plugins/jack/jack-sink.c
+++ b/spa/plugins/jack/jack-sink.c
@@ -49,7 +49,7 @@
 
 #define MAX_PORTS 128
 #define MAX_BUFFERS 8
-#define MAX_SAMPLES 1024
+#define MAX_SAMPLES 8192
 
 struct buffer {
 	uint32_t id;
@@ -566,7 +566,7 @@ impl_node_port_enum_params(void *object, int seq,
 			SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
 			SPA_PARAM_BUFFERS_blocks,  SPA_POD_Int(1),
 			SPA_PARAM_BUFFERS_size,    SPA_POD_CHOICE_RANGE_Int(
-							1024 * port->stride,
+							MAX_SAMPLES * port->stride,
 							16 * port->stride,
 							MAX_SAMPLES * port->stride),
 			SPA_PARAM_BUFFERS_stride,  SPA_POD_Int(port->stride),
diff --git a/spa/plugins/jack/jack-source.c b/spa/plugins/jack/jack-source.c
index ddacd6b98..77fd135c5 100644
--- a/spa/plugins/jack/jack-source.c
+++ b/spa/plugins/jack/jack-source.c
@@ -49,7 +49,7 @@
 
 #define MAX_PORTS 128
 #define MAX_BUFFERS 8
-#define MAX_SAMPLES 1024
+#define MAX_SAMPLES 8192
 
 struct buffer {
 	uint32_t id;
@@ -564,7 +564,7 @@ impl_node_port_enum_params(void *object, int seq,
 			SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
 			SPA_PARAM_BUFFERS_blocks,  SPA_POD_Int(1),
 			SPA_PARAM_BUFFERS_size,    SPA_POD_CHOICE_RANGE_Int(
-							1024 * port->stride,
+							MAX_SAMPLES * port->stride,
 							16 * port->stride,
 							MAX_SAMPLES * port->stride),
 			SPA_PARAM_BUFFERS_stride,  SPA_POD_Int(port->stride),