diff --git a/package/bmx7/bmx7.mk b/package/bmx7/bmx7.mk
index 54a9cc8eb5..7eb8a3d6ca 100644
--- a/package/bmx7/bmx7.mk
+++ b/package/bmx7/bmx7.mk
@@ -11,7 +11,7 @@ BMX7_LICENSE_FILES = LICENSE
 BMX7_DEPENDENCIES = zlib mbedtls wireless_tools
 
 define BMX7_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) -C $(@D)/$(d)/src
+	$(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) -C $(@D)/src
 endef
 
 define BMX7_INSTALL_TARGET_CMDS