diff --git a/source/blender/blenkernel/intern/particle_child.c b/source/blender/blenkernel/intern/particle_child.c
index dcd2a0b8fae..da6a5bfa12c 100644
--- a/source/blender/blenkernel/intern/particle_child.c
+++ b/source/blender/blenkernel/intern/particle_child.c
@@ -597,6 +597,9 @@ static float do_clump_level(float result[3],
   float clump = 0.0f;
 
   if (clumpcurve) {
+    if (clumpcurve->cm->table == NULL) {
+      BKE_curvemapping_initialize(clumpcurve);
+    }
     clump = pa_clump *
             (1.0f - clamp_f(BKE_curvemapping_evaluateF(clumpcurve, 0, time), 0.0f, 1.0f));