diff --git a/cpack/CMakeLists.txt b/cpack/CMakeLists.txt
index 175edc07..f3af855f 100644
--- a/cpack/CMakeLists.txt
+++ b/cpack/CMakeLists.txt
@@ -39,7 +39,8 @@ if(BUILDTYPE MATCHES RELEASE AND NOT BUILD_TESTING)
         set(CPACK_PACKAGE_EXECUTABLES "cryfs" "CryFS")
         set(CPACK_DEBIAN_PACKAGE_SECTION "utils")
         set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
-        set(CPACK_DEBIAN_PACKAGE_DEPENDS "fuse")
+        # Needs gnupg2 for postinst script
+        set(CPACK_DEBIAN_PACKAGE_DEPENDS "fuse gnupg2")
 
         set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "https://www.cryfs.org")
         set(CPACK_RPM_PACKAGE_LICENSE "LGPLv3")
diff --git a/cpack/debfiles/postinst b/cpack/debfiles/postinst
index 501ad312..371eca36 100755
--- a/cpack/debfiles/postinst
+++ b/cpack/debfiles/postinst
@@ -37,7 +37,7 @@ sources_list_dir () {
   root=$(get_apt_config "Dir")
   etc=$(get_apt_config "Dir::Etc")
   sourceparts=$(get_apt_config "Dir::Etc::sourceparts")
-  echo $root$etc$sourceparts
+  echo "$root/$etc/$sourceparts"
 }
 
 add_repository () {