diff --git a/check.go b/check.go
index 54ca338..bf26ab1 100644
--- a/check.go
+++ b/check.go
@@ -8,10 +8,20 @@ import (
 )
 
 type Result struct {
+	Failures []Failure
 	// XXX perhaps this is a list of the failed files and keywords?
 }
 
-var ErrNotAllClear = fmt.Errorf("some keyword check failed validation")
+type Failure struct {
+	Path     string
+	Keyword  string
+	Expected string
+	Got      string
+}
+
+func (f Failure) String() string {
+	return fmt.Sprintf("%q: keyword %q: expected %s; got %s", f.Path, f.Keyword, f.Expected, f.Got)
+}
 
 func Check(root string, dh *DirectoryHierarchy) (*Result, error) {
 	creator := dhCreator{DH: dh}
@@ -25,7 +35,7 @@ func Check(root string, dh *DirectoryHierarchy) (*Result, error) {
 	}
 	sort.Sort(byPos(creator.DH.Entries))
 
-	var failed bool
+	var result Result
 	for _, e := range creator.DH.Entries {
 		switch e.Type {
 		case SpecialType:
@@ -57,16 +67,11 @@ func Check(root string, dh *DirectoryHierarchy) (*Result, error) {
 					return nil, err
 				}
 				if string(kv) != curKeyVal {
-					failed = true
-					fmt.Printf("%q: keyword %q: expected %s; got %s\n", e.Path(), kv.Keyword(), kv.Value(), KeyVal(curKeyVal).Value())
+					failure := Failure{Path: e.Path(), Keyword: kv.Keyword(), Expected: kv.Value(), Got: KeyVal(curKeyVal).Value()}
+					result.Failures = append(result.Failures, failure)
 				}
 			}
 		}
 	}
-
-	if failed {
-		return nil, ErrNotAllClear
-	}
-
-	return nil, nil
+	return &result, nil
 }
diff --git a/cmd/gomtree/main.go b/cmd/gomtree/main.go
index 347e383..f0c9e1b 100644
--- a/cmd/gomtree/main.go
+++ b/cmd/gomtree/main.go
@@ -98,8 +98,10 @@ func main() {
 			isErr = true
 			return
 		}
-		if res != nil {
-			fmt.Printf("%#v\n", res)
+		if res != nil && len(res.Failures) > 0 {
+			for _, failure := range res.Failures {
+				fmt.Println(failure)
+			}
 		}
 	}
 }