diff --git a/pcsx2/GS/Renderers/Metal/GSDeviceMTL.h b/pcsx2/GS/Renderers/Metal/GSDeviceMTL.h
index f71cc0b1f4..9897c06c9a 100644
--- a/pcsx2/GS/Renderers/Metal/GSDeviceMTL.h
+++ b/pcsx2/GS/Renderers/Metal/GSDeviceMTL.h
@@ -242,7 +242,7 @@ public:
 	MRCOwned<id<MTLRenderPipelineState>> m_convert_pipeline_copy[2];
 	MRCOwned<id<MTLRenderPipelineState>> m_convert_pipeline_copy_mask[1 << 4];
 	MRCOwned<id<MTLRenderPipelineState>> m_merge_pipeline[4];
-	MRCOwned<id<MTLRenderPipelineState>> m_interlace_pipeline[4];
+	MRCOwned<id<MTLRenderPipelineState>> m_interlace_pipeline[NUM_INTERLACE_SHADERS];
 	MRCOwned<id<MTLRenderPipelineState>> m_datm_pipeline[2];
 	MRCOwned<id<MTLRenderPipelineState>> m_stencil_clear_pipeline;
 	MRCOwned<id<MTLRenderPipelineState>> m_primid_init_pipeline[2][2];