diff --git a/lang/python3/files/python3-package.mk b/lang/python3/files/python3-package.mk
index 3a49bc089..313b404e1 100644
--- a/lang/python3/files/python3-package.mk
+++ b/lang/python3/files/python3-package.mk
@@ -5,8 +5,8 @@
 # See /LICENSE for more information.
 #
 
-PYTHON_VERSION=3.4
-PYTHON_VERSION_MICRO=1
+PYTHON_VERSION:=3.4
+PYTHON_VERSION_MICRO:=1
 
 PYTHON_DIR:=$(STAGING_DIR)/usr
 PYTHON_BIN_DIR:=$(PYTHON_DIR)/bin