diff --git a/debian/changelog b/debian/changelog
index 2551b2f..bd5933e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+x11-xserver-utils (7.7+5) unstable; urgency=high
+
+  * High urgency upload for RC bug fix.
+  * sessreg: fix FTBFS with gcc 5 (closes: #778176).  Thanks to Matthias
+    Klose, Daniel Schepler and Aurélien Jarno.
+
+ -- Julien Cristau <jcristau@debian.org>  Sat, 12 Sep 2015 12:16:27 +0200
+
 x11-xserver-utils (7.7+4) unstable; urgency=medium
 
   * Let uscan verify tarball signatures.
diff --git a/debian/patches/03_sessreg_Pass-P-to-the-preprocessor-when-generating-filenames.diff b/debian/patches/03_sessreg_Pass-P-to-the-preprocessor-when-generating-filenames.diff
new file mode 100644
index 0000000..cee38ab
--- /dev/null
+++ b/debian/patches/03_sessreg_Pass-P-to-the-preprocessor-when-generating-filenames.diff
@@ -0,0 +1,29 @@
+From a5103b826dbd601c9245ceff43a006d65da21199 Mon Sep 17 00:00:00 2001
+From: Stefan Dirsch <sndirsch@suse.de>
+Date: Wed, 9 Sep 2015 23:44:06 +0200
+Subject: [PATCH sessreg] Pass -P to the preprocessor when generating filenames for the
+ manpage.
+
+Fixes build with GCC 5. Patch by Richard Biener <rguenther@suse.com>
+
+Signed-off-by: Julien Cristau <jcristau@debian.org>
+---
+ sessreg/man/Makefile.am | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/sessreg/man/Makefile.am b/sessreg/man/Makefile.am
+index 665ace5..2e5f146 100644
+--- a/sessreg/man/Makefile.am
++++ b/sessreg/man/Makefile.am
+@@ -9,7 +9,7 @@ SUFFIXES = .$(APP_MAN_SUFFIX) .man
+ 
+ AM_CPPFLAGS = -I$(top_builddir) -I$(top_srcdir)
+ filenames.sed: filenames.sed.c
+-	$(AM_V_GEN)$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
++	$(AM_V_GEN)$(CPP) -P $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+ 	    $(AM_CPPFLAGS) $(CPPFLAGS) $(srcdir)/filenames.sed.c | \
+ 	    $(SED) -n -e '/s|__/ p' -e '/^\/__/ p' > $@
+ 
+-- 
+2.5.1
+
diff --git a/debian/patches/series b/debian/patches/series
index 3b892b3..0f3b708 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -1,2 +1,3 @@
 01_sessreg_implement_hostname_hashing.diff
 02_xmodmap-include-config.h-before-system-headers.diff
+03_sessreg_Pass-P-to-the-preprocessor-when-generating-filenames.diff