diff --git a/src/frontend/inst64/idma_inst64_top.sv b/src/frontend/inst64/idma_inst64_top.sv
index 26f0b9a..6a3fbcb 100644
--- a/src/frontend/inst64/idma_inst64_top.sv
+++ b/src/frontend/inst64/idma_inst64_top.sv
@@ -55,7 +55,7 @@ module idma_inst64_top #(
     localparam int unsigned TFLenWidth   = AxiAddrWidth;
     localparam int unsigned RepWidth     = 32'd32;
     localparam int unsigned NumDim       = 32'd2;
-    localparam int unsigned BufferDepth  = 32'd16;
+    localparam int unsigned BufferDepth  = 32'd64;
 
     // derived constants and types
     localparam int unsigned StrbWidth    = AxiDataWidth / 32'd8;