diff --git a/sgr_agent_core/agents/dialog_agent.py b/sgr_agent_core/agents/dialog_agent.py
index b843863a..04f6998b 100644
--- a/sgr_agent_core/agents/dialog_agent.py
+++ b/sgr_agent_core/agents/dialog_agent.py
@@ -62,7 +62,7 @@ async def _after_action_phase(self, action_tool: BaseTool, result: str) -> None:
             self.logger.info("\n⏸️  Research paused - please answer questions")
             self._context.state = AgentStatesEnum.WAITING_FOR_CLARIFICATION
             self.streaming_generator.finish(
-                phase_id="{self._context.iteration}-final", content=self._context.execution_result
+                phase_id=f"{self._context.iteration}-final", content=self._context.execution_result
             )
             self._context.clarification_received.clear()
             await self._context.clarification_received.wait()
@@ -73,7 +73,7 @@ async def _after_action_phase(self, action_tool: BaseTool, result: str) -> None:
             self.logger.info("\n💬 Dialog shared - agent waiting for response")
             self._context.state = AgentStatesEnum.WAITING_FOR_CLARIFICATION
             self.streaming_generator.finish(
-                phase_id="{self._context.iteration}-final", content=self._context.execution_result
+                phase_id=f"{self._context.iteration}-final", content=self._context.execution_result
             )
             self._context.clarification_received.clear()
             await self._context.clarification_received.wait()
diff --git a/sgr_agent_core/base_agent.py b/sgr_agent_core/base_agent.py
index 6c3f0363..6abd8d9e 100644
--- a/sgr_agent_core/base_agent.py
+++ b/sgr_agent_core/base_agent.py
@@ -246,7 +246,7 @@ async def _execution_step(self):
         if isinstance(action_tool, ClarificationTool):
             self.logger.info("\n⏸️  Research paused - please answer questions")
             self.streaming_generator.finish(
-                phase_id="{self._context.iteration}-final", content=self._context.execution_result
+                phase_id=f"{self._context.iteration}-final", content=self._context.execution_result
             )
             self._context.clarification_received.clear()
             await self._context.clarification_received.wait()