diff --git a/source/blender/blenkernel/BKE_fcurve.hh b/source/blender/blenkernel/BKE_fcurve.hh
index cce319b59bc..220ed984c2d 100644
--- a/source/blender/blenkernel/BKE_fcurve.hh
+++ b/source/blender/blenkernel/BKE_fcurve.hh
@@ -478,10 +478,15 @@ bool BKE_fcurve_bezt_subdivide_handles(BezTriple *bezt,
 /**
  * Resize the FCurve 'bezt' array to fit the given length.
  *
+ * This potentially moves the entire array, and thus pointers from before this call should be
+ * considered invalid / dangling.
+ *
  * \param new_totvert: new number of elements in the FCurve's `bezt` array.
- * Constraint: `0 <= new_totvert <= fcu->totvert`
+ *
+ * \note When increasing the size of the array, newly added elements are not initialized. That is
+ * left to the caller.
  */
-void BKE_fcurve_bezt_shrink(FCurve *fcu, int new_totvert);
+void BKE_fcurve_bezt_resize(FCurve *fcu, int new_totvert);
 
 /**
  * Merge the two given BezTriple arrays `a` and `b` into a newly allocated BezTriple array of size
diff --git a/source/blender/blenkernel/intern/fcurve.cc b/source/blender/blenkernel/intern/fcurve.cc
index 366fa78f89b..0d9ee282c0c 100644
--- a/source/blender/blenkernel/intern/fcurve.cc
+++ b/source/blender/blenkernel/intern/fcurve.cc
@@ -1607,10 +1607,9 @@ bool BKE_fcurve_bezt_subdivide_handles(BezTriple *bezt,
   return true;
 }
 
-void BKE_fcurve_bezt_shrink(FCurve *fcu, const int new_totvert)
+void BKE_fcurve_bezt_resize(FCurve *fcu, const int new_totvert)
 {
   BLI_assert(new_totvert >= 0);
-  BLI_assert(new_totvert <= fcu->totvert);
 
   /* No early return when new_totvert == fcu->totvert. There is no way to know the intention of the
    * caller, nor the history of the FCurve so far, so `fcu->bezt` may actually have allocated space
@@ -1939,7 +1938,7 @@ void BKE_fcurve_deduplicate_keys(FCurve *fcu)
     }
   }
 
-  BKE_fcurve_bezt_shrink(fcu, prev_bezt_index + 1);
+  BKE_fcurve_bezt_resize(fcu, prev_bezt_index + 1);
 }
 
 /** \} */