diff --git a/platformio/builder/main.py b/platformio/builder/main.py
index d55c9ca1..629c1ef9 100644
--- a/platformio/builder/main.py
+++ b/platformio/builder/main.py
@@ -67,6 +67,7 @@ DefaultEnvironment(
     ENV=environ,
 
     UNIX_TIME=int(time()),
+    PROGNAME="program",
 
     PIOHOME_DIR=util.get_home_dir(),
     PROJECT_DIR=util.get_project_dir(),
diff --git a/platformio/builder/scripts/native.py b/platformio/builder/scripts/native.py
index bdbcd372..fec4610b 100644
--- a/platformio/builder/scripts/native.py
+++ b/platformio/builder/scripts/native.py
@@ -11,9 +11,7 @@ env = DefaultEnvironment()
 
 env.Replace(
 
-    SIZEPRINTCMD="size $SOURCES",
-
-    PROGNAME="program"
+    SIZEPRINTCMD="size $SOURCES"
 )
 
 #