diff --git a/qulab/scan/scan.py b/qulab/scan/scan.py
index 922032a6..8c393d07 100644
--- a/qulab/scan/scan.py
+++ b/qulab/scan/scan.py
@@ -481,8 +481,8 @@ def search(self,
         elif isinstance(space, OptimizeSpace):
             space.name = name
             space.optimizer.dimensions[name] = space.space
-            if space.suggestions:
-                space.optimizer.suggestions[name] = space.suggestions
+            if space.suggestion:
+                space.optimizer.suggestion[name] = space.suggestion
             self._add_search_space(name, space.optimizer.level, space)
             self.add_depends(space.optimizer.name, [name])
         else:
diff --git a/qulab/version.py b/qulab/version.py
index ae058b35..2840280d 100644
--- a/qulab/version.py
+++ b/qulab/version.py
@@ -1 +1 @@
-__version__ = "2.3.1"
\ No newline at end of file
+__version__ = "2.3.2"
\ No newline at end of file