diff --git a/Utilities/cmxmlrpc/CMakeLists.txt b/Utilities/cmxmlrpc/CMakeLists.txt
index 4aa2ca313..8a03e8f32 100644
--- a/Utilities/cmxmlrpc/CMakeLists.txt
+++ b/Utilities/cmxmlrpc/CMakeLists.txt
@@ -5,9 +5,6 @@ INCLUDE_REGULAR_EXPRESSION("^.*$")
 # Include all the necessary files for macros
 SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake")
 
-OPTION(HAVE_UNICODE_WCHAR "Enable Unicode Support" YES)
-MARK_AS_ADVANCED(HAVE_UNICODE_WCHAR)
-
 # Check if header file exists and add it to the list.
 SET(CURRENT_INCLUDES)
 INCLUDE (CheckIncludeFiles)
@@ -24,6 +21,13 @@ CHECK_INCLUDE_FILE_CONCAT("sys/filio.h" HAVE_SYS_FILIO_H)
 CHECK_INCLUDE_FILE_CONCAT("sys/ioctl.h" HAVE_SYS_IOCTL_H)
 CHECK_INCLUDE_FILE_CONCAT("wchar.h" HAVE_WCHAR_H)
 
+IF(HAVE_WCHAR_H)
+  OPTION(HAVE_UNICODE_WCHAR "Enable Unicode Support" YES)
+  MARK_AS_ADVANCED(HAVE_UNICODE_WCHAR)
+ELSE(HAVE_WCHAR_H)
+  SET(HAVE_UNICODE_WCHAR 0)
+ENDIF(HAVE_WCHAR_H)
+
 INCLUDE (CheckSymbolExists)
 CHECK_SYMBOL_EXISTS(asprintf "${CURRENT_INCLUDES}" HAVE_ASPRINTF)
 CHECK_SYMBOL_EXISTS(setgroups "${CURRENT_INCLUDES}" HAVE_SETGROUPS)