diff --git a/man/ndbuf_new.3 b/man/ndbuf_new.3
index c3ccfa4..0ad9c88 100644
--- a/man/ndbuf_new.3
+++ b/man/ndbuf_new.3
@@ -24,6 +24,10 @@ void (*free)(void *);
 .br
 };
 .fi
+
+.SH LIBRARY
+libndbuf
+
 .SH DESCRIPTION
 The
 .B ndbuf_new
diff --git a/man/ndbuf_read_raw.3 b/man/ndbuf_read_raw.3
index da82d28..1e538a0 100644
--- a/man/ndbuf_read_raw.3
+++ b/man/ndbuf_read_raw.3
@@ -12,6 +12,10 @@ uint32_t ndbuf_read_u32(ndbuf_t *b, uint32_t *val);
 uint32_t ndbuf_read_u64(ndbuf_t *b, uint64_t *val);
 uint32_t ndbuf_read_raw(ndbuf_t *b, void *dst, uint32_t len);
 .fi
+
+.SH LIBRARY
+libndbuf
+
 .SH DESCRIPTION
 The ndbuf_read_ family copies data from an
 .B ndbuf_t
diff --git a/man/ndbuf_write_raw.3 b/man/ndbuf_write_raw.3
index b75d02c..59b0180 100644
--- a/man/ndbuf_write_raw.3
+++ b/man/ndbuf_write_raw.3
@@ -13,6 +13,10 @@ uint32_t ndbuf_write_u64(ndbuf_t *b, uint64_t val);
 uint32_t ndbuf_write_raw(ndbuf_t *b, void *src, uint32_t len);
 uint32_t ndbuf_write_raw_head(ndbuf_t *b, void *src, uint32_t len);
 .fi
+
+.SH LIBRARY
+libndbuf
+
 .SH DESCRIPTION
 The ndbuf_write_ family writes data to an
 .B ndbuf_t