diff --git a/build-config.in b/build-config.in
index f31f0da3d..1fcb8cc9e 100644
--- a/build-config.in
+++ b/build-config.in
@@ -86,7 +86,6 @@ CMARK_LIBS = @CMARK_LIBS@
 COMPILER_TYPE = @COMPILER_TYPE@
 COMPILER_VERSION = @COMPILER_VERSION@
 DEBUG_CFLAGS = @DEBUG_CFLAGS@
-DOCBOOK_MANPAGES_STYLESHEET = @DOCBOOK_MANPAGES_STYLESHEET@
 DOCBOOK_ROOT = @DOCBOOK_ROOT@
 EBML_MATROSKA_INTERNAL = @EBML_MATROSKA_INTERNAL@
 EBML_CFLAGS = @EBML_CFLAGS@