diff --git a/Modules/CheckSymbolExists.cmake b/Modules/CheckSymbolExists.cmake
index 5f62738b4..e281fbd85 100644
--- a/Modules/CheckSymbolExists.cmake
+++ b/Modules/CheckSymbolExists.cmake
@@ -20,7 +20,7 @@ MACRO(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE)
             "${CHECK_SYMBOL_EXISTS_CONTENT}${POUND}include <${FILE}>\n")
     ENDFOREACH(FILE)
     SET(CHECK_SYMBOL_EXISTS_CONTENT
-        "${CHECK_SYMBOL_EXISTS_CONTENT}\n\nvoid main${PARENTS}{"
+        "${CHECK_SYMBOL_EXISTS_CONTENT}\n\nint main${PARENTS}{"
         "\n${POUND}ifndef ${SYMBOL}\nchar ${OPEN_PARENT}*f${CLOSE_PARENT} ${PARENTS} = ${SYMBOL};\n${POUND}endif\nreturn 0;\n}\n")
     WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c 
                "${CHECK_SYMBOL_EXISTS_CONTENT}")