diff --git a/src/pkg/runtime/Makefile b/src/pkg/runtime/Makefile
index e31073cf27..08bf278ef4 100644
--- a/src/pkg/runtime/Makefile
+++ b/src/pkg/runtime/Makefile
@@ -28,7 +28,7 @@ OFILES_386=\
 	vlop.$O\
 	vlrt.$O\
 
-GOARM ?= 6
+GOARM?=6
 
 # arm-specific object files
 OFILES_arm=\