diff --git a/sys/amd64/vmm/x86.c b/sys/amd64/vmm/x86.c
index 87ec26a12c4..310e7b34342 100644
--- a/sys/amd64/vmm/x86.c
+++ b/sys/amd64/vmm/x86.c
@@ -560,6 +560,18 @@ x86_emulate_cpuid(struct vm *vm, int vcpu_id,
 			}
 			break;
 
+		case CPUID_0000_0015:
+			/*
+			 * Don't report CPU TSC/Crystal ratio and clock
+			 * values since guests may use these to derive the
+			 * local APIC frequency..
+			 */
+			regs[0] = 0;
+			regs[1] = 0;
+			regs[2] = 0;
+			regs[3] = 0;
+			break;
+
 		case 0x40000000:
 			regs[0] = CPUID_VM_HIGH;
 			bcopy(bhyve_id, &regs[1], 4);
diff --git a/sys/amd64/vmm/x86.h b/sys/amd64/vmm/x86.h
index 0d70c04fd80..46a44df2f0c 100644
--- a/sys/amd64/vmm/x86.h
+++ b/sys/amd64/vmm/x86.h
@@ -41,6 +41,7 @@
 #define	CPUID_0000_000A	(0xA)
 #define	CPUID_0000_000B	(0xB)
 #define	CPUID_0000_000D	(0xD)
+#define	CPUID_0000_0015	(0x15)
 #define CPUID_8000_0000	(0x80000000)
 #define CPUID_8000_0001	(0x80000001)
 #define CPUID_8000_0002	(0x80000002)