diff --git a/src/lib/fbuf.h b/src/lib/fbuf.h
index 94086a523..98c3db19a 100644
--- a/src/lib/fbuf.h
+++ b/src/lib/fbuf.h
@@ -17,6 +17,8 @@ extern "C" {
 // come after. uses mmap (with huge pages, if possible) on unix and
 // virtualalloc on windows. it can grow arbitrarily large. it does
 // *not* maintain a NUL terminator, and can hold binary data.
+// on Windows, we're using VirtualAlloc(). on BSD, we're using realloc().
+// on Linux, we're using mmap()+mremap().
 
 typedef struct fbuf {
   uint64_t size;
diff --git a/src/lib/termdesc.c b/src/lib/termdesc.c
index a64468163..4bcca083b 100644
--- a/src/lib/termdesc.c
+++ b/src/lib/termdesc.c
@@ -679,6 +679,8 @@ int interrogate_terminfo(tinfo* ti, int fd, unsigned utf8, unsigned noaltscreen,
       // FIXME set up pixel-drawing API for framebuffer #1369
     }
   }
+#else
+  (void)nonewfonts;
 #endif
   if(fd >= 0){
     if(tcgetattr(fd, &ti->tpreserved)){