diff --git a/matRad_calcParticleDose.m b/matRad_calcParticleDose.m
index 57caeb832..33a97ef89 100644
--- a/matRad_calcParticleDose.m
+++ b/matRad_calcParticleDose.m
@@ -328,7 +328,7 @@
                     % vectorize computations more efficiently than when
                     % making this an outer loop
                     for ctScen = 1:pln.multScen.numOfCtScen
-                        if any(pln.multScen.scenMask(ctScen,:,:),'all') %We don't need it if no scenario for this ct scenario is relevant
+                        if any(any(pln.multScen.scenMask(ctScen,:,:))) %We don't need it if no scenario for this ct scenario is relevant
                             % precomputations for fine-sampling
                             if strcmp(pbCalcMode, 'fineSampling')   
                                 % compute radial distances relative to pencil beam