diff --git a/config.lua b/config.lua
index cc148bd..58b1750 100644
--- a/config.lua
+++ b/config.lua
@@ -69,7 +69,7 @@ local function validateSchema(schema, input, errors)
                     -- recursive schema validation for generic tables
                     errors[key] = errors[key] or {}
                     validateSchema(field_schema.schema, input_value, errors[key])
-                    if not errors[key] then
+                    if next(errors[key]) == nil then
                         errors[key] = nil
                     end
                 elseif wanted_type == 'list' then
diff --git a/tests/schema_validation.lua b/tests/schema_validation.lua
index 7b4d8f8..74ead89 100644
--- a/tests/schema_validation.lua
+++ b/tests/schema_validation.lua
@@ -1,4 +1,4 @@
-TestConfigSchemaValidator = {}
+TestSchemaValidator = {}
 
 local config = require('config')
 
@@ -25,7 +25,7 @@ function pprint(t, ident)
     end
 end
 
-function TestConfigSchemaValidator:testBasicFields()
+function TestSchemaValidator:testBasicFields()
     local errors = config.validateSchema({a={type='string'}}, {a='test'})
     lu.assertIs(len(errors), 0)
     local errors = config.validateSchema({a={type='number'}}, {a=123})
@@ -34,10 +34,29 @@ function TestConfigSchemaValidator:testBasicFields()
     lu.assertIs(len(errors), 1)
 end
 
-function TestConfigSchemaValidator:testList()
+function TestSchemaValidator:testList()
     local errors = config.validateSchema({a={type='list', schema={type='number'}}}, {a={1,2,3}})
     lu.assertIs(len(errors), 0)
 
     local errors = config.validateSchema({a={type='list', schema={type='number'}}}, {a={1,2,3,'asd'}})
     lu.assertIs(len(errors), 1)
 end
+
+function TestSchemaValidator:testTable()
+    local errors = config.validateSchema(
+        {
+            a={
+                type='table',
+                schema={
+                    b={
+                        type='number'
+                    }
+                }
+            }
+        },
+        {a=
+            {b=2}
+        }
+    )
+    lu.assertIs(len(errors), 0)
+end