diff --git a/lang/pyserial/Makefile b/lang/pyserial/Makefile
index dceb461c4..aed691956 100644
--- a/lang/pyserial/Makefile
+++ b/lang/pyserial/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2008 OpenWrt.org
+# Copyright (C) 2008-2011 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -34,14 +34,16 @@ define Package/pyserial/description
 endef
 
 define Build/Compile
-	$(call Build/Compile/PyMod,,install --prefix="$(PKG_INSTALL_DIR)/usr")
+	$(call Build/Compile/PyMod,., \
+		install --prefix="/usr" --root="$(PKG_INSTALL_DIR)", \
+	)
 endef
 
 define Package/pyserial/install
 	$(INSTALL_DIR) $(1)$(PYTHON_PKG_DIR)
 	$(CP) \
 	    $(PKG_INSTALL_DIR)$(PYTHON_PKG_DIR)/* \
-	    $(1)$(PYTHON_PKG_DIR)
+	    $(1)$(PYTHON_PKG_DIR)/
 endef
 
 $(eval $(call BuildPackage,pyserial))