diff --git a/api/git/update/validate.go b/api/git/update/validate.go
index 66805895d..801283676 100644
--- a/api/git/update/validate.go
+++ b/api/git/update/validate.go
@@ -21,10 +21,14 @@ func ValidateAutoUpdateSettings(autoUpdate *portainer.AutoUpdateSettings) error
 		return httperrors.NewInvalidPayloadError("invalid Webhook format")
 	}
 
-	if autoUpdate.Interval != "" {
-		if _, err := time.ParseDuration(autoUpdate.Interval); err != nil {
-			return httperrors.NewInvalidPayloadError("invalid Interval format")
-		}
+	if autoUpdate.Interval == "" {
+		return nil
+	}
+
+	if d, err := time.ParseDuration(autoUpdate.Interval); err != nil {
+		return httperrors.NewInvalidPayloadError("invalid Interval format")
+	} else if d < time.Minute {
+		return httperrors.NewInvalidPayloadError("interval must be at least 1 minute")
 	}
 
 	return nil
diff --git a/api/git/update/validate_test.go b/api/git/update/validate_test.go
index 457cbc9fe..ec1654d2d 100644
--- a/api/git/update/validate_test.go
+++ b/api/git/update/validate_test.go
@@ -23,6 +23,16 @@ func Test_ValidateAutoUpdate(t *testing.T) {
 			value:   &portainer.AutoUpdateSettings{Interval: "1dd2hh3mm"},
 			wantErr: true,
 		},
+		{
+			name:    "short interval value",
+			value:   &portainer.AutoUpdateSettings{Interval: "1s"},
+			wantErr: true,
+		},
+		{
+			name:    "valid webhook without interval",
+			value:   &portainer.AutoUpdateSettings{Webhook: "8dce8c2f-9ca1-482b-ad20-271e86536ada"},
+			wantErr: false,
+		},
 		{
 			name: "valid auto update",
 			value: &portainer.AutoUpdateSettings{