diff --git a/src/dsp/cpu.c b/src/dsp/cpu.c
index 8223b391..6d16171b 100644
--- a/src/dsp/cpu.c
+++ b/src/dsp/cpu.c
@@ -87,6 +87,9 @@ static int x86CPUInfo(CPUFeature feature) {
   if (feature == kSSE3) {
     return 0 != (cpu_info[2] & 0x00000001);
   }
+  if (feature == kSSE4_1) {
+    return 0 != (cpu_info[2] & 0x00080000);
+  }
   if (feature == kAVX) {
     // bits 27 (OSXSAVE) & 28 (256-bit AVX)
     if ((cpu_info[2] & 0x18000000) == 0x18000000) {
diff --git a/src/dsp/dsp.h b/src/dsp/dsp.h
index 0db4f04f..8ed5b104 100644
--- a/src/dsp/dsp.h
+++ b/src/dsp/dsp.h
@@ -102,6 +102,7 @@ extern "C" {
 typedef enum {
   kSSE2,
   kSSE3,
+  kSSE4_1,
   kAVX,
   kAVX2,
   kNEON,