diff --git a/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp b/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
index e7df99d6d3..d6bc2df573 100644
--- a/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
+++ b/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
@@ -187,7 +187,7 @@ void GLVertexDecompilerThread::insertMainStart(std::stringstream & OS)
 	OS << "{\n";
 
 	//Declare temporary registers, ignoring those mapped to outputs
-	for (const ParamType PT : m_parr.params[PF_PARAM_NONE])
+	for (const ParamType &PT : m_parr.params[PF_PARAM_NONE])
 	{
 		for (const ParamItem &PI : PT.items)
 		{
diff --git a/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp b/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp
index e551ad8987..b1730c4ad3 100644
--- a/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp
+++ b/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp
@@ -223,7 +223,7 @@ void VKVertexDecompilerThread::insertMainStart(std::stringstream & OS)
 	OS << "{\n";
 
 	//Declare temporary registers, ignoring those mapped to outputs
-	for (const ParamType PT : m_parr.params[PF_PARAM_NONE])
+	for (const ParamType &PT : m_parr.params[PF_PARAM_NONE])
 	{
 		for (const ParamItem &PI : PT.items)
 		{