diff --git a/configure.ac b/configure.ac
index 3b1c9393..61ffd4e5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,11 +49,12 @@ AX_CHECK_COMPILE_FLAG([-maltivec],[flag_altivec="true"])
 AX_CHECK_COMPILE_FLAG([-mavx2],   [flag_avx2="true"])
 AX_CHECK_COMPILE_FLAG([-msse4.1], [flag_sse4_1="true"])
 AX_CHECK_COMPILE_FLAG([-msse2],   [flag_sse2="true"])
-AX_CHECK_COMPILE_FLAG([-mbmi],   [flag_bmi="true"])
-AX_CHECK_COMPILE_FLAG([-mabm],   [flag_abm="true"])
+AX_CHECK_COMPILE_FLAG([-mbmi],    [flag_bmi="true"])
+AX_CHECK_COMPILE_FLAG([-mabm],    [flag_abm="true"])
+AX_CHECK_COMPILE_FLAG([-mbmi2],   [flag_bmi2="true"])
 
 AM_CONDITIONAL([HAVE_ALTIVEC], [test x"$flag_altivec" = x"true"])
-AM_CONDITIONAL([HAVE_AVX2], [test x"$flag_avx2" = x"true" -a x"$flag_bmi" = x"true" -a x"$flag_abm" = x"true"])
+AM_CONDITIONAL([HAVE_AVX2], [test x"$flag_avx2" = x"true" -a x"$flag_bmi" = x"true" -a x"$flag_abm" = x"true" -a x"$flag_bmi2" = x"true"])
 AM_CONDITIONAL([HAVE_SSE4_1], [test x"$flag_sse4_1" = x"true"])
 AM_CONDITIONAL([HAVE_SSE2], [test x"$flag_sse2" = x"true"])
 
diff --git a/src/Makefile.am b/src/Makefile.am
index 3f82bcb8..c932c407 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -213,7 +213,7 @@ endif #HAVE_PPC
 if HAVE_X86
 
 if HAVE_AVX2
-libavx2_la_CFLAGS = -mavx2 -mbmi -mabm
+libavx2_la_CFLAGS = -mavx2 -mbmi -mabm -mbmi2
 endif
 if HAVE_SSE4_1
 libsse41_la_CFLAGS = -msse4.1