diff --git a/rust/proc_macro.go b/rust/proc_macro.go
index 49dbd8d..2752dc3 100644
--- a/rust/proc_macro.go
+++ b/rust/proc_macro.go
@@ -66,7 +66,7 @@
 	outputFile := android.PathForModuleOut(ctx, fileName)
 
 	srcPath, paths := srcPathFromModuleSrcs(ctx, procMacro.baseCompiler.Properties.Srcs)
-	deps.SrcDeps = paths
+	deps.SrcDeps = append(deps.SrcDeps, paths...)
 
 	procMacro.unstrippedOutputFile = outputFile