diff --git a/cc/cc.go b/cc/cc.go
index 8e55553..0668fd9 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -163,7 +163,6 @@
 	GroupStaticLibs bool
 
 	proto            android.ProtoFlags
-	protoDeps        android.Paths
 	protoC           bool // Whether to use C instead of C++
 	protoOptionsFile bool // Whether to look for a .options file next to the .proto
 }
@@ -1594,6 +1593,10 @@
 			return
 		}
 
+		if depTag == android.ProtoPluginDepTag {
+			return
+		}
+
 		if dep.Target().Os != ctx.Os() {
 			ctx.ModuleErrorf("OS mismatch between %q and %q", ctx.ModuleName(), depName)
 			return