diff --git a/rust/proc_macro.go b/rust/proc_macro.go
index 1a247d9..0da87da 100644
--- a/rust/proc_macro.go
+++ b/rust/proc_macro.go
@@ -77,3 +77,10 @@
 	TransformSrctoProcMacro(ctx, srcPath, deps, flags, outputFile, deps.linkDirs)
 	return outputFile
 }
+
+func (procMacro *procMacroDecorator) getStem(ctx ModuleContext) string {
+	stem := procMacro.baseCompiler.getStemWithoutSuffix(ctx)
+	validateLibraryStem(ctx, stem, procMacro.crateName())
+
+	return stem + String(procMacro.baseCompiler.Properties.Suffix)
+}