diff --git a/lib/sequel/adapters/shared/mysql.rb b/lib/sequel/adapters/shared/mysql.rb
index 9d5e91228..35d93a299 100644
--- a/lib/sequel/adapters/shared/mysql.rb
+++ b/lib/sequel/adapters/shared/mysql.rb
@@ -578,6 +578,7 @@ def schema_parse_table(table_name, opts)
           end
           row[:allow_null] = row.delete(:Null) == 'YES'
           row[:comment] = row.delete(:Comment)
+          row[:comment] = nil if row[:comment] == ""
           row[:default] = row.delete(:Default)
           row[:db_type] = row.delete(:Type)
           row[:type] = schema_column_type(row[:db_type])
diff --git a/spec/adapters/mysql_spec.rb b/spec/adapters/mysql_spec.rb
index a1a759e04..9c4f77048 100644
--- a/spec/adapters/mysql_spec.rb
+++ b/spec/adapters/mysql_spec.rb
@@ -48,7 +48,7 @@
       Integer :b
     end
     @db.run("ALTER TABLE dolls CHANGE b b INT COMMENT 'blah'")
-    @db.schema(:dolls).map{|k, v| v[:comment]}.must_equal ["", 'blah']
+    @db.schema(:dolls).map{|k, v| v[:comment]}.must_equal [nil, 'blah']
   end
 
   it "should include an :auto_increment schema attribute if auto incrementing" do