diff --git a/cmake/modules/AutoGenGo.cmake b/cmake/modules/AutoGenGo.cmake
index 7bee31f..7c59578 100644
--- a/cmake/modules/AutoGenGo.cmake
+++ b/cmake/modules/AutoGenGo.cmake
@@ -24,12 +24,11 @@
   # not currently supported -- the install prefix has to be set properly
   # as part of the original build.
 
-  # Tools subdir within the install.
-  file(APPEND ${outfile} "func defaultGOROOTValue() string { return \"${CMAKE_INSTALL_PREFIX}\" }\n")
-
   # Compiler version
   file(STRINGS "${srcroot}/../VERSION" rawver)
   string(STRIP ${rawver} ver)
+  # Default GOROOT var initialization.
+  file(APPEND ${outfile} "func init() { DefaultGoroot = \"${CMAKE_INSTALL_PREFIX}\" }\n")
   file(APPEND ${outfile} "const TheVersion = ")
   emitversionstring(${outfile} ${srcroot})
   file(APPEND ${outfile} "\n")