diff --git a/libpod/container.go b/libpod/container.go
index e35a620ed9..d9dd9ad129 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -216,7 +216,7 @@ type ContainerConfig struct {
 	// Can be specified by name or UID/GID
 	User string `json:"user,omitempty"`
 	// Additional groups to add
-	Groups []string `json:"groups, omitempty"`
+	Groups []string `json:"groups,omitempty"`
 
 	// Namespace Config
 	// IDs of container to share namespaces with