diff --git a/src/addNoise.m b/src/addNoise.m
index 4d32bc5557f5d94efa17c5843ee1a78ba165b52a..7e3522c5c44ac7b43d0247d5c64d48f4e2370717 100644
--- a/src/addNoise.m
+++ b/src/addNoise.m
@@ -14,4 +14,6 @@ if noiselevel > 0
     errMat = rand(size(F))-.5+1i*(rand(size(F))-.5);
     errMat = errMat ./ norm(errMat);
     Fn = F + errMat * noiselevel * norm(F);
-end
+elseif noiselevel == 0
+    Fn = F;
+end
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