diff --git a/src/Matrix.cpp b/src/Matrix.cpp
index 4360a77..4f43156 100644
--- a/src/Matrix.cpp
+++ b/src/Matrix.cpp
@@ -262,7 +262,7 @@ namespace Aurora {
     {
         for(size_t i=0; i<getDataSize(); ++i)
         {
-            if(mData.get()[i] != NAN)
+            if(mData.get()[i] == mData.get()[i])
             {
                 return false;
             }