diff --git a/Tests/CMakeTests/CheckSourceTreeTest.cmake.in b/Tests/CMakeTests/CheckSourceTreeTest.cmake.in
index cff5bafa9..1cfadcb79 100644
--- a/Tests/CMakeTests/CheckSourceTreeTest.cmake.in
+++ b/Tests/CMakeTests/CheckSourceTreeTest.cmake.in
@@ -9,6 +9,7 @@ message("CVS_EXECUTABLE='${CVS_EXECUTABLE}'")
 message("HOME='${HOME}'")
 message("ENV{DASHBOARD_TEST_FROM_CTEST}='$ENV{DASHBOARD_TEST_FROM_CTEST}'")
 message("")
+string(REPLACE "\\" "\\\\" HOME "${HOME}")
 
 
 # Is the build directory the same as or underneath the source directory?
@@ -41,6 +42,16 @@ message("in_source_build='${in_source_build}'")
 message("")
 
 
+# If this does not appear to be a CVS checkout, just pass the test here and now.
+# (Do not let the test fail if it is run in a tree *exported* from CVS or
+# unpacked from a .zip file source installer...)
+#
+if(NOT EXISTS "${CMake_SOURCE_DIR}/CVS/Root")
+  message("source tree is not a CVS checkout... test passes by early return...")
+  return()
+endif()
+
+
 # Check with "cvs -q -n up -dP" if there are any local modifications to the
 # CMake source tree:
 #