diff --git a/libs/util/plist.c b/libs/util/plist.c
index 1172a354c..db3c607ed 100644
--- a/libs/util/plist.c
+++ b/libs/util/plist.c
@@ -1433,7 +1433,7 @@ PL_ParseStruct (const plfield_t *fields, const plitem_t *item, void *data,
 			}
 		}
 		if (!f->name) {
-			PL_Message (messages, item, "error: unknown field %s",
+			PL_Message (messages, item, "error: unknown field '%s'",
 						current->key);
 			result = 0;
 		}
diff --git a/libs/video/renderer/vulkan/vkparse.c b/libs/video/renderer/vulkan/vkparse.c
index f319cde4d..875796779 100644
--- a/libs/video/renderer/vulkan/vkparse.c
+++ b/libs/video/renderer/vulkan/vkparse.c
@@ -161,7 +161,7 @@ find_field (plfield_t *fields, const char *field_name,
 			return f;
 		}
 	}
-	PL_Message (messages, item, "error: unknown field %s", field_name);
+	PL_Message (messages, item, "error: unknown field '%s'", field_name);
 	return 0;
 }