diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 5a6a1cee8b8c..a4046cc1f687 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -2080,8 +2080,7 @@ pmap_bootstrap_la57(void *arg __unused)
 
 	if ((cpu_stdext_feature2 & CPUID_STDEXT2_LA57) == 0)
 		return;
-	if (!TUNABLE_INT_FETCH("vm.pmap.la57", &la57))
-		la57 = 1;
+	TUNABLE_INT_FETCH("vm.pmap.la57", &la57);
 	if (!la57)
 		return;