diff --git a/sys/cddl/dev/dtrace/amd64/dtrace_subr.c b/sys/cddl/dev/dtrace/amd64/dtrace_subr.c
index d898319e80c6..82d20ebba936 100644
--- a/sys/cddl/dev/dtrace/amd64/dtrace_subr.c
+++ b/sys/cddl/dev/dtrace/amd64/dtrace_subr.c
@@ -319,7 +319,7 @@ dtrace_gethrtime_init(void *arg)
 	int i;
 #endif
 
-	if (vm_guest)
+	if (vm_guest != VM_GUEST_NO)
 		return;
 
 	/* The current CPU is the reference one. */
diff --git a/sys/cddl/dev/dtrace/i386/dtrace_subr.c b/sys/cddl/dev/dtrace/i386/dtrace_subr.c
index fe6ea19ddb15..4c0decaa3c87 100644
--- a/sys/cddl/dev/dtrace/i386/dtrace_subr.c
+++ b/sys/cddl/dev/dtrace/i386/dtrace_subr.c
@@ -321,7 +321,7 @@ dtrace_gethrtime_init(void *arg)
 	int i;
 #endif
 
-	if (vm_guest)
+	if (vm_guest != VM_GUEST_NO)
 		return;
 
 	/* The current CPU is the reference one. */