diff --git a/storage/tokudb/ft-index/cmake_modules/TokuSetupCTest.cmake b/storage/tokudb/ft-index/cmake_modules/TokuSetupCTest.cmake
index f6aedca0868..5ca2fb64458 100644
--- a/storage/tokudb/ft-index/cmake_modules/TokuSetupCTest.cmake
+++ b/storage/tokudb/ft-index/cmake_modules/TokuSetupCTest.cmake
@@ -60,7 +60,7 @@ macro(hostname out)
     COMMAND hostname
     OUTPUT_VARIABLE fullhostname
     OUTPUT_STRIP_TRAILING_WHITESPACE)
-  string(REGEX REPLACE "\\.tokutek\\.com$" "" ${out} ${fullhostname})
+  string(REGEX REPLACE "\\.tokutek\\.com$" "" ${out} "${fullhostname}")
 endmacro(hostname)
 
 ## gather machine info