diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c
index d2241fe493b..f1bc1b559d7 100644
--- a/sys/amd64/amd64/machdep.c
+++ b/sys/amd64/amd64/machdep.c
@@ -875,7 +875,7 @@ getmemsize(caddr_t kmdp, u_int64_t first)
 			if (smap->base < physmap[i + 1]) {
 				if (boothowto & RB_VERBOSE)
 					printf(
-	"Overlapping or non-montonic memory region, ignoring second region\n");
+	"Overlapping or non-monotonic memory region, ignoring second region\n");
 				continue;
 			}
 		}
diff --git a/sys/i386/i386/machdep.c b/sys/i386/i386/machdep.c
index f9da6fdbe19..e10fb02d4e9 100644
--- a/sys/i386/i386/machdep.c
+++ b/sys/i386/i386/machdep.c
@@ -1739,7 +1739,7 @@ int15e820:
 			if (smap->base < physmap[i + 1]) {
 				if (boothowto & RB_VERBOSE)
 					printf(
-	"Overlapping or non-montonic memory region, ignoring second region\n");
+	"Overlapping or non-monotonic memory region, ignoring second region\n");
 				continue;
 			}
 		}