diff --git a/lib/matplotlib/backends/qt_editor/figureoptions.py b/lib/matplotlib/backends/qt_editor/figureoptions.py
index 2809e63c4e8c..9d31fa9ced2c 100644
--- a/lib/matplotlib/backends/qt_editor/figureoptions.py
+++ b/lib/matplotlib/backends/qt_editor/figureoptions.py
@@ -149,7 +149,7 @@ def prepare_data(d, init):
cmaps = [(cmap, name) for name, cmap in sorted(cm._colormaps.items())]
for label, mappable in labeled_mappables:
cmap = mappable.get_cmap()
- if cmap not in cm._colormaps.values():
+ if cmap.name not in cm._colormaps:
cmaps = [(cmap, cmap.name), *cmaps]
low, high = mappable.get_clim()
mappabledata = [
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