diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 08fe8db0e..c30df4d7a 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -4682,8 +4682,8 @@ void ImProcFunctions::chromiLuminanceCurve (PipetteBuffer *pipetteBuffer, int pW
                         factorsat = chromaCfactor;
                         factor = factorsat;
                         Color::transitred ( HH, Chprov1, dred, factorskin, protect_redcur, factorskinext, deltaHH, factorsat, factor);
-                        atmp *= factor;
-                        btmp *= factor;
+                        atmp = LIM(atmp * factor, min(-42000.f, atmp), max(42000.f, atmp));
+                        btmp = LIM(btmp * factor, min(-42000.f, btmp), max(42000.f, btmp));
                     }
 
                     // end C=f(L)
diff --git a/rtengine/iplab2rgb.cc b/rtengine/iplab2rgb.cc
index fe8590470..0c1e00774 100644
--- a/rtengine/iplab2rgb.cc
+++ b/rtengine/iplab2rgb.cc
@@ -38,7 +38,7 @@ inline void clipLAB(float iL, float ia, float ib, float &oL, float &oa, float &o
 {
     if (iL < 0.f) {
         oL = oa = ob = 0.f;
-    } else if (iL > 32768.f) {
+    } else if (iL > 32768.f || min(ia, ib) < -42000.f || max(ia, ib) > 42000.f) {
         
         float X, Y, Z;
         float r, g, b;