diff --git a/configure.ac b/configure.ac
index 0ff1bf87..455997e1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -152,7 +152,7 @@ CFLAGS="-Werror"
 
 AH_TEMPLATE([C_ATTRIBUTE_ALWAYS_INLINE],[Determines if the compilers supports always_inline attribute.])
 AC_MSG_CHECKING(if compiler allows __attribute__((always_inline)) )
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([ void __attribute__((always_inline)) test(){}
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([ inline void __attribute__((always_inline)) test(){}
 ])],[ AC_MSG_RESULT(yes);AC_DEFINE(C_ATTRIBUTE_ALWAYS_INLINE)],AC_MSG_RESULT(no))
 
 AH_TEMPLATE([C_ATTRIBUTE_FASTCALL],[Determines if the compilers supports fastcall attribute.])