diff --git a/Makefile.vex.am b/Makefile.vex.am
index ed9d80905..0071634d3 100644
--- a/Makefile.vex.am
+++ b/Makefile.vex.am
@@ -71,7 +71,7 @@ pub/libvex_guest_offsets.h: auxprogs/genoffsets.c \
 	      $(AM_CFLAGS_@VGCONF_PLATFORM_PRI_CAPS@) \
 				-O -S -o auxprogs/genoffsets.s \
 					 auxprogs/genoffsets.c
-	grep xyzzy auxprogs/genoffsets.s | grep define \
+	grep xyzzy auxprogs/genoffsets.s | grep "^#define" \
 	   | sed "s/xyzzy\\$$//g" \
 	   | sed "s/xyzzy#//g" \
 	   | sed "s/xyzzy//g" \
diff --git a/NEWS b/NEWS
index 05a2669d7..3542a7a9e 100644
--- a/NEWS
+++ b/NEWS
@@ -82,6 +82,7 @@ n-i-bz  s390x: Shadow registers can now be examined using vgdb
         and non reset of "C-ontinued" signal
 297991  Valgrind interferes with mmap()+ftell() 
 297992  Support systems missing WIFCONTINUED (e.g. pre-2.6.10 Linux) 
+297993  Fix compilation of valgrind with gcc -g3.
 298394  s390x: Don't bail out on an unknown machine model. Assume it's a new model.
 
 Release 3.7.0 (5 November 2011)