diff --git a/poky/meta/classes/patch.bbclass b/poky/meta/classes/patch.bbclass
index cd241f1..25ec089 100644
--- a/poky/meta/classes/patch.bbclass
+++ b/poky/meta/classes/patch.bbclass
@@ -5,6 +5,13 @@
 
 PATCHDEPENDENCY = "${PATCHTOOL}-native:do_populate_sysroot"
 
+# There is a bug in patch 2.7.3 and earlier where index lines
+# in patches can change file modes when they shouldn't:
+# http://git.savannah.gnu.org/cgit/patch.git/patch/?id=82b800c9552a088a241457948219d25ce0a407a4
+# This leaks into debug sources in particular. Add the dependency
+# to target recipes to avoid this problem until we can rely on 2.7.4 or later.
+PATCHDEPENDENCY_append_class-target = " patch-replacement-native:do_populate_sysroot"
+
 PATCH_GIT_USER_NAME ?= "OpenEmbedded"
 PATCH_GIT_USER_EMAIL ?= "oe.patch@oe"