diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/files/readfiletostring_clearfirst.patch b/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/files/readfiletostring_clearfirst.patch
new file mode 100644
index 0000000000..05a673a6cb
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/files/readfiletostring_clearfirst.patch
@@ -0,0 +1,11 @@
+--- a/file_util.cc	2014-10-21 19:09:47.052101527 -0400
++++ b/file_util.cc	2014-10-21 19:22:00.619134259 -0400
+@@ -152,6 +152,8 @@
+ }
+ 
+ bool ReadFileToString(const FilePath& path, std::string* contents) {
++  if (contents)
++    contents->clear();
+   if (path.ReferencesParent())
+     return false;
+   FILE* file = OpenFile(path, "rb");
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609-r2.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609-r3.ebuild
similarity index 100%
rename from sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609-r2.ebuild
rename to sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609-r3.ebuild
diff --git a/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609.ebuild b/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609.ebuild
index 164a594a38..a193893dec 100644
--- a/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/coreos-base/libchrome/libchrome-180609.ebuild
@@ -42,6 +42,7 @@ src_prepare() {
 
 	epatch "${FILESDIR}"/base-125070-no-X.patch
 	epatch "${FILESDIR}"/base-125070-x32.patch
+	epatch "${FILESDIR}"/readfiletostring_clearfirst.patch
 }
 
 src_configure() {