diff --git a/Doc/lib/libbsddb.tex b/Doc/lib/libbsddb.tex
index b7fe2ef..ae42923 100644
--- a/Doc/lib/libbsddb.tex
+++ b/Doc/lib/libbsddb.tex
@@ -2,7 +2,6 @@
          Interface to Berkeley DB library}
 
 \declaremodule{extension}{bsddb}
-  \platform{Unix, Windows}
 \modulesynopsis{Interface to Berkeley DB database library}
 \sectionauthor{Skip Montanaro}{skip@mojam.com}
 
diff --git a/Doc/lib/libdbhash.tex b/Doc/lib/libdbhash.tex
index f5f98ea..cf44707 100644
--- a/Doc/lib/libdbhash.tex
+++ b/Doc/lib/libdbhash.tex
@@ -2,7 +2,6 @@
          DBM-style interface to the BSD database library}
 
 \declaremodule{standard}{dbhash}
-  \platform{Unix, Windows}
 \modulesynopsis{DBM-style interface to the BSD database library.}
 \sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
 
diff --git a/Doc/lib/libpopen2.tex b/Doc/lib/libpopen2.tex
index fa0c1a6..e3b1573 100644
--- a/Doc/lib/libpopen2.tex
+++ b/Doc/lib/libpopen2.tex
@@ -2,7 +2,6 @@
          Subprocesses with accessible I/O streams}
 
 \declaremodule{standard}{popen2}
-  \platform{Unix, Windows}
 \modulesynopsis{Subprocesses with accessible standard I/O streams.}
 \sectionauthor{Drew Csillag}{drew_csillag@geocities.com}