diff --git a/src/depiction/spectrum/matching/__init__.py b/src/depiction/spectrum/matching/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/depiction/calibration/methods/isotope_pattern_matcher.py b/src/depiction/spectrum/matching/isotope_pattern_matcher.py
similarity index 100%
rename from src/depiction/calibration/methods/isotope_pattern_matcher.py
rename to src/depiction/spectrum/matching/isotope_pattern_matcher.py
diff --git a/src/depiction/spectrum/peak_filtering/filter_by_isotope_pattern.py b/src/depiction/spectrum/peak_filtering/filter_by_isotope_pattern.py
index 8b25e21..fa719d3 100644
--- a/src/depiction/spectrum/peak_filtering/filter_by_isotope_pattern.py
+++ b/src/depiction/spectrum/peak_filtering/filter_by_isotope_pattern.py
@@ -3,7 +3,7 @@
 import numpy as np
 from numpy.typing import NDArray
 
-from depiction.calibration.methods.isotope_pattern_matcher import IsotopePatternMatcher
+from depiction.spectrum.matching.isotope_pattern_matcher import IsotopePatternMatcher
 
 
 @dataclass
diff --git a/tests/unit/spectrum/matching/__init__.py b/tests/unit/spectrum/matching/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/unit/calibration/test_isotope_pattern_matcher.py b/tests/unit/spectrum/matching/test_isotope_pattern_matcher.py
similarity index 97%
rename from tests/unit/calibration/test_isotope_pattern_matcher.py
rename to tests/unit/spectrum/matching/test_isotope_pattern_matcher.py
index 82faedf..7474bf1 100644
--- a/tests/unit/calibration/test_isotope_pattern_matcher.py
+++ b/tests/unit/spectrum/matching/test_isotope_pattern_matcher.py
@@ -1,7 +1,7 @@
 import numpy as np
 import pytest
 
-from depiction.calibration.methods.isotope_pattern_matcher import IsotopePatternMatcher
+from depiction.spectrum.matching.isotope_pattern_matcher import IsotopePatternMatcher
 
 
 @pytest.fixture()