diff --git a/graphics/dia/dia-enable-html-docs.patch b/graphics/dia/dia-enable-html-docs.patch
new file mode 100644
index 0000000000..9bc02e1c0c
--- /dev/null
+++ b/graphics/dia/dia-enable-html-docs.patch
@@ -0,0 +1,26 @@
+diff -u a/configure.in b/configure.in
+--- a/configure.in	2015-10-10 20:23:14.257728818 +0200
++++ b/configure.in	2015-10-10 20:23:44.512728478 +0200
+@@ -532,10 +532,10 @@
+  AM_CONDITIONAL(WITH_JW, test "xno" != "xno")
+ fi
+ hardbook_ok=no
+-xsltproc_ok=no
++xsltproc_ok=yes
+ if test "x$with_hardbooks" = "xno"; then
+   AM_CONDITIONAL(WITH_JW, test "xno" != "xno")
+-  AM_CONDITIONAL(WITH_HTMLDOC, test "xno" != "xno")
++  AM_CONDITIONAL(WITH_HTMLDOC, test "x$xsltproc" != "xno")
+   AM_CONDITIONAL(WITH_PDFDOC, test "xno" != "xno")
+   AM_CONDITIONAL(WITH_PSDOC, test "xno" != "xno")
+ else
+@@ -549,9 +549,6 @@
+       hardbook_ok=yes
+     fi
+   fi
+-  if test "x$xsltproc" != "xno" ; then
+-    xsltproc_ok=yes
+-  fi
+ fi
+ 
+ 
diff --git a/graphics/dia/dia.SlackBuild b/graphics/dia/dia.SlackBuild
index 3eacc8ad4d..a3dd7b330c 100644
--- a/graphics/dia/dia.SlackBuild
+++ b/graphics/dia/dia.SlackBuild
@@ -5,11 +5,19 @@
 # Originally written by Matt Hayes <dominian at slackadelic dot com>
 # Updated for 64bit by Ash Wiren <ash at spooksoftware dot com> (19.08.2009)
 # Maintained by Dugan Chen <thedoogster at gmail dot com> (<= 18.09.2015)
+#
 # Updated and currently maintained by Philip Lacroix <slackph at posteo dot de>
+#
+# 19.09.2015:
+# - reviewed and updated for dia 0.97.3.
+# 10.10.2015:
+# - enabled HTML documentation (based on patch by Mike Gorse, SUSE);
+# - enabled python and cairo plug-ins, SWIG;
+# - disabled gnome code (deprecated).
 
 PRGNAM=dia
 VERSION=${VERSION:-0.97.3}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -55,6 +63,9 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
+# Enable HTML documentation, necessary for online help functionality.
+patch configure.in < $CWD/dia-enable-html-docs.patch
+
 autoreconf -fi
 
 CFLAGS="$SLKCFLAGS" \
@@ -64,6 +75,11 @@ CXXFLAGS="$SLKCFLAGS" \
   --mandir=/usr/man \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --with-swig \
+  --with-cairo \
+  --with-python \
+  --disable-gnome \
+  --disable-static \
   --build=$ARCH-slackware-linux
 
 make