diff --git a/package/python3-decorator/python3-decorator.mk b/package/python3-decorator/python3-decorator.mk
index d809bb5b9b..c14f10fbf4 100644
--- a/package/python3-decorator/python3-decorator.mk
+++ b/package/python3-decorator/python3-decorator.mk
@@ -7,7 +7,7 @@
 # Please keep in sync with package/python-decorator/python-decorator.mk
 PYTHON3_DECORATOR_VERSION = 4.4.1
 PYTHON3_DECORATOR_SITE = https://files.pythonhosted.org/packages/dc/c3/9d378af09f5737cfd524b844cd2fbb0d2263a35c11d712043daab290144d
-PYTHON3_DECORATOR_SOURCE = decorator-$(PYTHON_DECORATOR_VERSION).tar.gz
+PYTHON3_DECORATOR_SOURCE = decorator-$(PYTHON3_DECORATOR_VERSION).tar.gz
 PYTHON3_DECORATOR_LICENSE = BSD-2-Clause
 PYTHON3_DECORATOR_LICENSE_FILES = LICENSE.txt
 PYTHON3_DECORATOR_SETUP_TYPE = setuptools