diff --git a/src/param/range.rs b/src/param/range.rs
index abe1c27d..a21b6ca4 100644
--- a/src/param/range.rs
+++ b/src/param/range.rs
@@ -48,6 +48,8 @@ impl FloatRange {
     /// Calculate a skew factor for [`FloatRange::Skewed`] that makes a linear gain parameter range
     /// appear as if it was linear when formatted as decibels.
     pub fn gain_skew_factor(min_db: f32, max_db: f32) -> f32 {
+        nih_debug_assert!(min_db < max_db);
+
         let min_gain = util::db_to_gain(min_db);
         let max_gain = util::db_to_gain(max_db);
         let middle_db = (max_db + min_db) / 2.0;