diff --git a/android/config.go b/android/config.go
index abb07ce..54c9da8 100644
--- a/android/config.go
+++ b/android/config.go
@@ -581,6 +581,10 @@
 	return Bool(c.productVariables.Debuggable)
 }
 
+func (c *config) Eng() bool {
+	return Bool(c.productVariables.Eng)
+}
+
 func (c *config) DevicePrefer32BitApps() bool {
 	return Bool(c.productVariables.DevicePrefer32BitApps)
 }
diff --git a/java/dex.go b/java/dex.go
index 5cec325..a6d486a 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -160,6 +160,11 @@
 	// TODO(ccross): if this is an instrumentation test of an obfuscated app, use the
 	// dictionary of the app and move the app from libraryjars to injars.
 
+	// Don't strip out debug information for eng builds.
+	if ctx.Config().Eng() {
+		r8Flags = append(r8Flags, "--debug")
+	}
+
 	return r8Flags, r8Deps
 }