diff --git a/driver/postgres/PostgresDriver.js b/driver/postgres/PostgresDriver.js
index e13b903c73b71113bb529552e59fb4ce0ca8af0c..50de6a60120ece7ebf49009eac588a5313343f39 100644
--- a/driver/postgres/PostgresDriver.js
+++ b/driver/postgres/PostgresDriver.js
@@ -819,10 +819,10 @@ class PostgresDriver {
             const tableColumnDefault = typeof tableColumn.default === "string"
                 ? JSON.parse(tableColumn.default.substring(1, tableColumn.default.length - 1))
                 : tableColumn.default;
-            return OrmUtils_1.OrmUtils.deepCompare(columnMetadata.default, tableColumnDefault);
+            return OrmUtils_1.OrmUtils.deepCompare(columnMetadata.default, tableColumnDefault ?? null);
         }
         const columnDefault = this.lowerDefaultValueIfNecessary(this.normalizeDefault(columnMetadata));
-        return columnDefault === tableColumn.default;
+        return columnDefault === tableColumn.default || columnDefault === undefined && tableColumn.default.toLowerCase() === 'null';
     }
     /**
      * Normalizes "isUnique" value of the column.