diff --git a/api/user.go b/api/user.go
index 1c3b4f90..ef7c1e4b 100644
--- a/api/user.go
+++ b/api/user.go
@@ -76,7 +76,7 @@ func (create UserCreate) Validate() error {
 		if len(create.Email) > 256 {
 			return fmt.Errorf("email is too long, maximum length is 256")
 		}
-		if common.ValidateEmail(create.Email) {
+		if !common.ValidateEmail(create.Email) {
 			return fmt.Errorf("invalid email format")
 		}
 	}
@@ -118,7 +118,7 @@ func (patch UserPatch) Validate() error {
 		if len(*patch.Email) > 256 {
 			return fmt.Errorf("email is too long, maximum length is 256")
 		}
-		if common.ValidateEmail(*patch.Email) {
+		if !common.ValidateEmail(*patch.Email) {
 			return fmt.Errorf("invalid email format")
 		}
 	}