diff --git a/rtengine/imagefloat.cc b/rtengine/imagefloat.cc
index bc720699d..39ad0fe8b 100644
--- a/rtengine/imagefloat.cc
+++ b/rtengine/imagefloat.cc
@@ -504,7 +504,7 @@ void Imagefloat::calcCroppedHistogram(const ProcParams &params, float scale, LUT
 }
 
 // Parallelized transformation; create transform with cmsFLAGS_NOCACHE!
-void Imagefloat::ExecCMSTransform(cmsHTRANSFORM hTransform)
+void Imagefloat::ExecCMSTransform2(cmsHTRANSFORM hTransform)
 {
 
     // LittleCMS cannot parallelize planar setups -- Hombre: LCMS2.4 can! But it we use this new feature, memory allocation
@@ -527,6 +527,53 @@ void Imagefloat::ExecCMSTransform(cmsHTRANSFORM hTransform)
                 *(p++) = *(pR++)/ 65535.f;
                 *(p++) = *(pG++)/ 65535.f;
                 *(p++) = *(pB++)/ 65535.f;
+				
+            }
+
+            cmsDoTransform (hTransform, pBuf.data, pBuf.data, width);
+
+            p = pBuf.data;
+            pR = r(y);
+            pG = g(y);
+            pB = b(y);
+
+            for (int x = 0; x < width; x++) {
+                *(pR++) = *(p++);
+                *(pG++) = *(p++);
+                *(pB++) = *(p++);
+            }
+        } // End of parallelization
+    }
+}
+
+
+
+
+// Parallelized transformation; create transform with cmsFLAGS_NOCACHE!
+void Imagefloat::ExecCMSTransform(cmsHTRANSFORM hTransform)
+{
+
+    // LittleCMS cannot parallelize planar setups -- Hombre: LCMS2.4 can! But it we use this new feature, memory allocation
+    // have to be modified too to build temporary buffers that allow multi processor execution
+#ifdef _OPENMP
+    #pragma omp parallel
+#endif
+    {
+        AlignedBuffer<float> pBuf(width * 3);
+
+#ifdef _OPENMP
+        #pragma omp for schedule(static)
+#endif
+
+        for (int y = 0; y < height; y++)
+        {
+            float *p = pBuf.data, *pR = r(y), *pG = g(y), *pB = b(y);
+
+            for (int x = 0; x < width; x++) {
+                *(p++) = *(pR++);
+                *(p++) = *(pG++);
+                *(p++) = *(pB++);
+				
             }
 
             cmsDoTransform (hTransform, pBuf.data, pBuf.data, width);
diff --git a/rtengine/imagefloat.h b/rtengine/imagefloat.h
index 5246a2f6e..d48e51cee 100644
--- a/rtengine/imagefloat.h
+++ b/rtengine/imagefloat.h
@@ -104,6 +104,7 @@ public:
     void                 normalizeFloatTo1();
     void                 normalizeFloatTo65535();
     void                 calcCroppedHistogram(const ProcParams &params, float scale, LUTu & hist);
+    void                 ExecCMSTransform2(cmsHTRANSFORM hTransform);
 
     void                 ExecCMSTransform(cmsHTRANSFORM hTransform);
     void                 ExecCMSTransform(cmsHTRANSFORM hTransform, const LabImage &labImage, int cx, int cy);
diff --git a/rtengine/iplab2rgb.cc b/rtengine/iplab2rgb.cc
index 700437734..77cf65d21 100644
--- a/rtengine/iplab2rgb.cc
+++ b/rtengine/iplab2rgb.cc
@@ -654,7 +654,7 @@ Imagefloat* ImProcFunctions::workingtrc(Imagefloat* working, int cw, int ch, int
 		cmsHTRANSFORM hTransform = cmsCreateTransform(iprof, TYPE_RGB_FLT, oprofdef, TYPE_RGB_FLT, params->icm.outputIntent, flags);
 		lcmsMutex->unlock();
 
-        image->ExecCMSTransform(hTransform);
+        image->ExecCMSTransform2(hTransform);
 		
         cmsDeleteTransform(hTransform);
         image->normalizeFloatTo65535();