diff --git a/docs/changelog.md b/docs/changelog.md
index f825702d..f19ce742 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -50,6 +50,8 @@ Fixed:
 
 Changed:
 
+- [SpectrometerCalibration][extra.gui.jupyter.SpectrometerCalibration] no longer
+  saves loaded data to cache if `user_cache=False`.
 - `extra.recipes` package renamed to `extra.applications`
 - [XGM.pulse_energy()][extra.components.XGM.pulse_energy] will now insert NaNs
   instead of zeros as a fill value for runs with a varying number of pulses
diff --git a/src/extra/gui/jupyter/spectrometer_calibration.py b/src/extra/gui/jupyter/spectrometer_calibration.py
index e6dcc96f..995dd82b 100644
--- a/src/extra/gui/jupyter/spectrometer_calibration.py
+++ b/src/extra/gui/jupyter/spectrometer_calibration.py
@@ -240,7 +240,8 @@ def __init__(
             run (int): run number
             source (tuple[str, str]): data source
             image_data (np.ndarray): 2D array
-            use_cache (bool): try loading data from cache if True (default)
+            use_cache (bool): try loading data from cache if True (default).
+              If set to False, data will neither be loaded from nor written to cache.
         """
         self.image_data = image_data
         if image_data is None:
@@ -359,9 +360,11 @@ def _load_data(proposal: int, run: int, source: tuple[str, str], use_cache: bool
         data = kd.xarray().squeeze()
         mean_data = data.mean(dim="trainId")
 
-        # cache data for faster loading
-        cache_path.mkdir(mode=666, exist_ok=True, parents=True)
-        np.save(cache_path / fname, mean_data)
+        # cache data for faster loading unless use_cache=False
+        if use_cache:
+            cache_path.mkdir(mode=666, exist_ok=True, parents=True)
+            np.save(cache_path / fname, mean_data)
+
         return mean_data
 
     # Widget Initialization Methods