diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c264692..d65fc2b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
   devices connected to the data server. (`#134`)
 * Bugfix: Nodes with nameless options don't raise an exception when their enum attribute is called (`#165`).
 * Bugfix: Values of enumerated nodes can now be pickled (`#129`).
+* Bugfix: `SHFScope` `run()`  and `stop()` shows specified timeout value when `TimeoutError` is raised.
 
 ## Version 0.3.5
 * Adapt AWG Waveform upload (`write_to_waveform_memory`) to append to existing transactions.
diff --git a/src/zhinst/toolkit/driver/nodes/shfqa_scope.py b/src/zhinst/toolkit/driver/nodes/shfqa_scope.py
index 033bb3ad..12ba289c 100644
--- a/src/zhinst/toolkit/driver/nodes/shfqa_scope.py
+++ b/src/zhinst/toolkit/driver/nodes/shfqa_scope.py
@@ -55,7 +55,8 @@ def run(
             self.enable.wait_for_state_change(1, timeout=timeout, sleep_time=sleep_time)
         except TimeoutError as error:
             raise TimeoutError(
-                "Scope could not been started within the specified timeout({timeout})s."
+                "Scope could not been started within "
+                f"the specified timeout ({timeout})s"
             ) from error
 
     def stop(self, *, timeout: float = 10, sleep_time: float = 0.005) -> None:
@@ -76,7 +77,8 @@ def stop(self, *, timeout: float = 10, sleep_time: float = 0.005) -> None:
             self.enable.wait_for_state_change(0, timeout=timeout, sleep_time=sleep_time)
         except TimeoutError as error:
             raise TimeoutError(
-                "Scope could not been stopped within the specified timeout({timeout})s."
+                "Scope could not been stopped within "
+                f"the specified timeout ({timeout})s"
             ) from error
 
     def wait_done(self, *, timeout: float = 10, sleep_time: float = 0.005) -> None: