diff --git a/src/delete-carddav-object.c b/src/delete-carddav-object.c
index f838c7a..ec5ef5a 100644
--- a/src/delete-carddav-object.c
+++ b/src/delete-carddav-object.c
@@ -265,6 +265,7 @@ gboolean carddav_delete(carddav_settings* settings, carddav_error* error) {
 				}
 				g_free(url);
 				g_free(lock_token);
+				g_free(lock_error.str);
 				if (result) {
 					g_free(settings->file);
 					settings->file = NULL;
@@ -454,6 +455,7 @@ gboolean carddav_delete_by_uri(carddav_settings* settings, carddav_error* error)
 		}
 		g_free(url);
 		g_free(lock_token);
+		g_free(lock_error.str);
 		if (result) {
 			g_free(settings->file);
 			settings->file = NULL;
diff --git a/src/modify-carddav-object.c b/src/modify-carddav-object.c
index a6a9c84..81d4602 100644
--- a/src/modify-carddav-object.c
+++ b/src/modify-carddav-object.c
@@ -266,6 +266,7 @@ gboolean carddav_modify(carddav_settings* settings, carddav_error* error) {
 					}
 					g_free(url);
 					g_free(lock_token);
+					g_free(lock_error.str);
 					if (result) {
 						g_free(settings->file);
 						settings->file = NULL;
@@ -460,6 +461,7 @@ gboolean carddav_modify_by_uri(carddav_settings* settings, carddav_error* error)
 			}
 			g_free(url);
 			g_free(lock_token);
+			g_free(lock_error.str);
 			if (result) {
 				g_free(settings->file);
 				settings->file = NULL;