diff --git a/scripts/automation/trex_control_plane/interactive/trex/astf/trex_astf_client.py b/scripts/automation/trex_control_plane/interactive/trex/astf/trex_astf_client.py
index 99435823f4..0bdc5b5a9b 100644
--- a/scripts/automation/trex_control_plane/interactive/trex/astf/trex_astf_client.py
+++ b/scripts/automation/trex_control_plane/interactive/trex/astf/trex_astf_client.py
@@ -20,7 +20,7 @@
 from ..stl.trex_stl_client import STLClient
 
 from .trex_astf_port import ASTFPort
-from .trex_astf_profile import ASTFProfile
+from .trex_astf_profile import ASTFProfile, ASTFProfileLight
 from .topo import ASTFTopologyManager
 from .tunnels_topo import TunnelsTopo
 from .stats.traffic import CAstfTrafficStats
@@ -614,7 +614,10 @@ def load_profile(self, profile, tunables = {}, pid_input = DEFAULT_PROFILE_ID):
             if profile is None:
                 return
 
-        profile_json = profile.to_json_str(pretty = False, sort_keys = True)
+        if isinstance(profile, ASTFProfileLight):
+            profile_json = profile.to_json_str()
+        else:
+            profile_json = profile.to_json_str(pretty = False, sort_keys = True)
 
         self.ctx.logger.pre_cmd('Loading traffic at acquired ports.')
         rc = self._upload_fragmented('profile_fragment', profile_json, pid_input = pid_input)