diff --git a/cryptest.sh b/cryptest.sh
index e3970a1d..9626bc67 100755
--- a/cryptest.sh
+++ b/cryptest.sh
@@ -922,6 +922,7 @@ if [[ (("$IS_X86" -ne "0" || "$IS_X64" -ne "0") && ("$CLANG_COMPILER" -ne "0" &&
 	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "avx2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-mavx2"); fi
 	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-mbmi"); fi
 	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-mbmi2"); fi
+	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "adx") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-madx"); fi
 fi
 
 # Sun Studio 12.1 (and above) compilers consume GCC inline assembly. However, the compiler does not declare
@@ -941,6 +942,7 @@ if [[ ("$IS_X86" -ne "0" || "$IS_X64" -ne "0") && ("$IS_SOLARIS" -ne "0") && ("$
 	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "avx2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AVX2__"); fi
 	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__BMI__"); fi
 	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__BMI2__"); fi
+	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "adx") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__ADX__"); fi
 fi
 
 # Please, someone put an end to the madness of determining Features, FPU, ABI, hard floats and soft floats...