diff --git a/go-training.slide b/go-training.slide
index 5ba7511..91346f2 100644
--- a/go-training.slide
+++ b/go-training.slide
@@ -931,7 +931,7 @@ Tasks:
     	Remove(key string) error
     }
 
-TIP: Create a constructor function ans let your IDE do the magic
+TIP: Create a constructor function and let your IDE do the magic
 TIP: Use a map as in-memory datastore
 
     Peek: examples/interfaces
diff --git a/solutions/interfaces/interfaces.go b/solutions/interfaces/interfaces.go
index 33fa875..5818716 100644
--- a/solutions/interfaces/interfaces.go
+++ b/solutions/interfaces/interfaces.go
@@ -5,7 +5,7 @@ type Patient struct {
 	Name string
 }
 
-type Datastorer interface {
+type DataStorer interface {
 	Put(key string, patient any) error
 	Get(key string) (any, bool, error)
 	Remove(key string) error
@@ -15,7 +15,7 @@ type inMemoryPatientDatastore struct {
 	data map[string]Patient
 }
 
-func New() Datastorer {
+func New() DataStorer {
 	return &inMemoryPatientDatastore{
 		data: map[string]Patient{},
 	}