diff --git a/configure.ac b/configure.ac
index c3970b9..e3b228d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -420,6 +420,7 @@ if test x$ac_cv_c_compiler_gnu = xyes ; then
 
 	if test "x$asm_optimisation" = "xyes" ; then
 		XIPH_ADD_CFLAGS([-msse2])
+		XIPH_ADD_CFLAGS([-mfpmath=sse])
 		fi
 
 	fi