diff --git a/tests/check_serialization.cpp b/tests/check_serialization.cpp
index 3af0a37..6f60103 100644
--- a/tests/check_serialization.cpp
+++ b/tests/check_serialization.cpp
@@ -22,15 +22,40 @@ int main(int argc, char **argv)
 
         if(data != serialized)
         {
-            std::cerr << "============================================================\n";
-            std::cerr << "result (w/o comment) different: " << filename << std::endl;
-            std::cerr << "------------------------------------------------------------\n";
-            std::cerr << "# serialized\n";
-            std::cerr << serialized;
-            std::cerr << "------------------------------------------------------------\n";
-            std::cerr << "# data\n";
-            std::cerr << data;
-            return 1;
+            // this is really a ditry hack, but is the easiest way...
+            // TODO: cleanup by adding comparison function to check if a value is NaN or not
+            if(filename.substr(filename.size() - 22, 22) == "float-inf-and-nan.toml" &&
+                std::isnan   (toml::find<double>(serialized, "nan"))           &&
+               !std::signbit (toml::find<double>(serialized, "nan"))           &&
+                std::isnan   (toml::find<double>(serialized, "nan_plus"))      &&
+               !std::signbit (toml::find<double>(serialized, "nan_plus"))      &&
+                std::isnan   (toml::find<double>(serialized, "nan_neg"))       &&
+                std::signbit (toml::find<double>(serialized, "nan_neg"))       &&
+               !std::isnan   (toml::find<double>(serialized, "infinity"))      &&
+               !std::isfinite(toml::find<double>(serialized, "infinity"))      &&
+               !std::signbit (toml::find<double>(serialized, "infinity"))      &&
+               !std::isnan   (toml::find<double>(serialized, "infinity_plus")) &&
+               !std::isfinite(toml::find<double>(serialized, "infinity_plus")) &&
+               !std::signbit (toml::find<double>(serialized, "infinity_plus")) &&
+               !std::isnan   (toml::find<double>(serialized, "infinity_neg"))  &&
+               !std::isfinite(toml::find<double>(serialized, "infinity_neg"))  &&
+                std::signbit (toml::find<double>(serialized, "infinity_neg")))
+            {
+                // then it is correctly serialized.
+                // Note that, the result of (nan == nan) is false. so `data == serialized` is false.
+            }
+            else
+            {
+                std::cerr << "============================================================\n";
+                std::cerr << "result (w/o comment) different: " << filename << std::endl;
+                std::cerr << "------------------------------------------------------------\n";
+                std::cerr << "# serialized\n";
+                std::cerr << serialized;
+                std::cerr << "------------------------------------------------------------\n";
+                std::cerr << "# data\n";
+                std::cerr << data;
+                return 1;
+            }
         }
     }
     {
@@ -42,15 +67,46 @@ int main(int argc, char **argv)
         const auto serialized = toml::parse<toml::preserve_comments>("tmp.toml");
         if(data != serialized)
         {
-            std::cerr << "============================================================\n";
-            std::cerr << "result (w/  comment) different: " << filename << std::endl;
-            std::cerr << "------------------------------------------------------------\n";
-            std::cerr << "# serialized\n";
-            std::cerr << serialized;
-            std::cerr << "------------------------------------------------------------\n";
-            std::cerr << "# data\n";
-            std::cerr << data;
-            return 1;
+            // this is really a ditry hack, but is the easiest way...
+            // TODO: cleanup by adding comparison function to check if a value is NaN or not
+            if(filename.substr(filename.size() - 22, 22) == "float-inf-and-nan.toml" &&
+                std::isnan   (toml::find<double>(serialized, "nan"))           &&
+               !std::signbit (toml::find<double>(serialized, "nan"))           &&
+                std::isnan   (toml::find<double>(serialized, "nan_plus"))      &&
+               !std::signbit (toml::find<double>(serialized, "nan_plus"))      &&
+                std::isnan   (toml::find<double>(serialized, "nan_neg"))       &&
+                std::signbit (toml::find<double>(serialized, "nan_neg"))       &&
+               !std::isnan   (toml::find<double>(serialized, "infinity"))      &&
+               !std::isfinite(toml::find<double>(serialized, "infinity"))      &&
+               !std::signbit (toml::find<double>(serialized, "infinity"))      &&
+               !std::isnan   (toml::find<double>(serialized, "infinity_plus")) &&
+               !std::isfinite(toml::find<double>(serialized, "infinity_plus")) &&
+               !std::signbit (toml::find<double>(serialized, "infinity_plus")) &&
+               !std::isnan   (toml::find<double>(serialized, "infinity_neg"))  &&
+               !std::isfinite(toml::find<double>(serialized, "infinity_neg"))  &&
+                std::signbit (toml::find<double>(serialized, "infinity_neg"))  &&
+                toml::find(data, "nan").comments()           == toml::find(serialized, "nan").comments()           &&
+                toml::find(data, "nan_plus").comments()      == toml::find(serialized, "nan_plus").comments()      &&
+                toml::find(data, "nan_neg").comments()       == toml::find(serialized, "nan_neg").comments()       &&
+                toml::find(data, "infinity").comments()      == toml::find(serialized, "infinity").comments()      &&
+                toml::find(data, "infinity_plus").comments() == toml::find(serialized, "infinity_plus").comments() &&
+                toml::find(data, "infinity_neg").comments()  == toml::find(serialized, "infinity_neg").comments()  )
+            {
+                // then it is correctly serialized.
+                // Note that, the result of (nan == nan) is false. so `data == serialized` is false.
+            }
+            else
+            {
+                std::cerr << "============================================================\n";
+                std::cerr << "result (w/  comment) different: " << filename << std::endl;
+                std::cerr << "------------------------------------------------------------\n";
+                std::cerr << "# serialized\n";
+                std::cerr << serialized;
+                std::cerr << "------------------------------------------------------------\n";
+                std::cerr << "# data\n";
+                std::cerr << data;
+                return 1;
+            }
         }
     }
     return 0;