diff --git a/fpgaconvnet/hls/generate/partition.py b/fpgaconvnet/hls/generate/partition.py
index abdd59d..a201f50 100644
--- a/fpgaconvnet/hls/generate/partition.py
+++ b/fpgaconvnet/hls/generate/partition.py
@@ -320,8 +320,9 @@ def create_testbench_data(self, input_data):
 
     """
     Vivado HLS functions
-    """
-
+    Note: you must change all vivado_hls commands to vitis_hls to resolve the error:
+    vivado_hls: command not found (versions > 2019.2)
+    """    
     def create_vivado_hls_project(self, fpga_part="xc7z045ffg900-2", clk=5):
 
         # check everything is generated