diff --git a/CMakeLists.txt b/CMakeLists.txt
index c1c4962..c22ed0b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,7 +66,7 @@
 
 # Find Proton components
 
-find_package(Proton 0.18)
+find_package(Proton 0.17)
 if (Proton_FOUND)
     get_filename_component(PROTON_INSTALL_DIR ${Proton_INCLUDE_DIRS} PATH CACHE PATH "Proton install directory")
     message(STATUS "Qpid proton found. Version ${Proton_VERSION} at ${Proton_INCLUDE_DIRS}")
@@ -75,7 +75,7 @@
     set (ErrorFlag TRUE)
 endif ()
 
-find_package(ProtonCpp 0.18)
+find_package(ProtonCpp 0.17)
 if (ProtonCpp_FOUND)
     get_filename_component(PROTON_CPP_INSTALL_DIR ${ProtonCpp_INCLUDE_DIRS} PATH CACHE PATH "ProtonCpp install directory")
     message(STATUS "Qpid proton c++ binding found. Version ${ProtonCpp_VERSION} at ${ProtonCpp_INCLUDE_DIRS}")
diff --git a/shims/rhea-js/CMakeLists.txt b/shims/rhea-js/CMakeLists.txt
index d997215..1ffd94b 100644
--- a/shims/rhea-js/CMakeLists.txt
+++ b/shims/rhea-js/CMakeLists.txt
@@ -20,9 +20,9 @@
 # Building Rhea requires that node.js is installed.
 
 project(qpid-interop-test-rhea-shims)
-message(STATUS "Searching for Rhea shim build and run requirements...")
-
 set(RHEA_DIR "$ENV{HOME}/rhea" CACHE PATH "Path to local Rhea installation")
+message(STATUS "Searching for Rhea shim build and run requirements... RHEA_DIR=${RHEA_DIR}")
+
 find_file(RHEA package.json HINTS ${RHEA_DIR} NO_DEFAULT_PATH DOC "Rhea javascript package file")
 if (RHEA STREQUAL "RHEA-NOTFOUND")
   message(STATUS "No local Rhea directory found, using upstream package.")