diff --git a/debian/rules b/debian/rules
index 7543328..d5dcb9a 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,7 +13,8 @@
 .NOTPARALLEL:
 
 DEB_BUILD_DIR=$(CURDIR)/debian/cryptobox-server
-CB_PYDIR=$(DEB_BUILD_DIR)/usr/lib/python$(shell pyversions -vr)/site-packages/cryptobox
+PY_VER=$(shell pyversions -vr | cut -f 1 -d " ")
+CB_PYDIR=$(DEB_BUILD_DIR)/usr/lib/python${PY_VER}/site-packages/cryptobox
 
 
 build: build-stamp