diff --git a/nc_test4/tst_specific_filters.sh b/nc_test4/tst_specific_filters.sh
index 43235d286..2f05b959b 100755
--- a/nc_test4/tst_specific_filters.sh
+++ b/nc_test4/tst_specific_filters.sh
@@ -150,6 +150,7 @@ testszip() {
 testblosc() {
   zext=$1
   if ! avail blosc; then return 0; fi
+echo ">>> $HDF5_PLUGIN_PATH"
   runfilter $zext blosc $BLOSCARGS "$BLOSCCODEC"
   diff -b -w "tmp_filt_blosc.cdl" "tmp_filt_blosc.dump"
 }
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index f97a80141..9dc8c2b15 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -102,17 +102,25 @@ install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${BUILD_PLUGIN_LIB} DESTINATION ${P
 ENDMACRO()
 
 install(DIRECTORY DESTINATION ${PLUGIN_INSTALL_DIR})
+IF(Bzip2_FOUND)
 installplugin(h5bzip2)
+ENDIF()
+IF(Zstd_FOUND)
 installplugin(h5zstd)
+ENDIF()
+IF(Blosc_FOUND)
 installplugin(h5blosc)
+ENDIF()
 IF(ENABLE_NCZARR)
   installplugin(h5fletcher32)
   installplugin(h5shuffle)
   installplugin(h5deflate)
-  installplugin(h5szip)
   installplugin(nczdefaults)
+IF(Szip_FOUND)
+  installplugin(h5szip)
   installplugin(nczszip)
 ENDIF()
+ENDIF()
 
 ENDIF(ENABLE_PLUGIN_INSTALL)