diff --git a/plugins/spectral_compressor/CHANGELOG.md b/plugins/spectral_compressor/CHANGELOG.md
index dd9e49f0..84c8cf3f 100644
--- a/plugins/spectral_compressor/CHANGELOG.md
+++ b/plugins/spectral_compressor/CHANGELOG.md
@@ -14,6 +14,11 @@ Versioning](https://semver.org/spec/v2.0.0.html).
   tradeoff between faster timings and more spectral precision. Existing
   instances are not affected.
 
+### Fixed
+
+- The sidechain matching mode now caps the relative thresholds to behave more
+  consistently with quiet inputs.
+
 ## [0.4.2] - 2023-03-22
 
 ### Changed
diff --git a/plugins/spectral_compressor/src/compressor_bank.rs b/plugins/spectral_compressor/src/compressor_bank.rs
index 574c421b..d23219a1 100644
--- a/plugins/spectral_compressor/src/compressor_bank.rs
+++ b/plugins/spectral_compressor/src/compressor_bank.rs
@@ -988,7 +988,8 @@ impl CompressorBank {
 
             // Notice how the threshold and knee values are scaled here
             let downwards_threshold_db =
-                unsafe { self.downwards_thresholds_db.get_unchecked(bin_idx) + sidechain_scale_db };
+                unsafe { self.downwards_thresholds_db.get_unchecked(bin_idx) + sidechain_scale_db }
+                    .max(util::MINUS_INFINITY_DB);
             let downwards_ratio = unsafe { self.downwards_ratios.get_unchecked(bin_idx) };
             let downwards_knee_parabola_scale =
                 unsafe { self.downwards_knee_parabola_scale.get_unchecked(bin_idx) };
@@ -1006,7 +1007,8 @@ impl CompressorBank {
             );
 
             let upwards_threshold_db =
-                unsafe { self.upwards_thresholds_db.get_unchecked(bin_idx) + sidechain_scale_db };
+                unsafe { self.upwards_thresholds_db.get_unchecked(bin_idx) + sidechain_scale_db }
+                    .max(util::MINUS_INFINITY_DB);
             let upwards_ratio = unsafe { self.upwards_ratios.get_unchecked(bin_idx) };
             let upwards_knee_parabola_scale =
                 unsafe { self.upwards_knee_parabola_scale.get_unchecked(bin_idx) };