diff --git a/disassembler/disassembler_x86.cc b/disassembler/disassembler_x86.cc
index d4bef0f..1f74c93 100644
--- a/disassembler/disassembler_x86.cc
+++ b/disassembler/disassembler_x86.cc
@@ -938,6 +938,11 @@
         has_modrm = true;
         load = true;
         break;
+      case 0xB8:
+        opcode1 = "popcnt";
+        has_modrm = true;
+        load = true;
+        break;
       case 0xBE:
         opcode1 = "movsxb";
         has_modrm = true;