diff --git a/rtengine/ipwavelet.cc b/rtengine/ipwavelet.cc
index 54d103b7b..a899f5a9a 100644
--- a/rtengine/ipwavelet.cc
+++ b/rtengine/ipwavelet.cc
@@ -1722,6 +1722,9 @@ void ImProcFunctions::WaveletcontAllL(LabImage * labco, float ** varhue, float *
 
     }
 
+#ifdef _OPENMP
+        #pragma omp barrier
+#endif
 
         if((cp.conres != 0.f || cp.conresH != 0.f) && cp.resena && cp.oldsh) { // cp.conres = 0.f and cp.comresH = 0.f means that all will be multiplied by 1.f, so we can skip this step
 #ifdef _OPENMP