diff --git a/usr.bin/units/units.c b/usr.bin/units/units.c
index 78b7e4020ed..1b6d0ed90b4 100644
--- a/usr.bin/units/units.c
+++ b/usr.bin/units/units.c
@@ -497,8 +497,7 @@ lookupunit(const char *unit)
 			}
 		}
 		free(copy);
-	}
-	if (unit[strlen(unit) - 1] == 's') {
+	} else if (unit[strlen(unit) - 1] == 's') {
 		copy = dupstr(unit);
 		copy[strlen(copy) - 1] = 0;
 		for (i = 0; i < unitcount; i++) {