diff --git a/gpui/src/platform/mac/renderer.rs b/gpui/src/platform/mac/renderer.rs
index 11ca3915fb..56259cc9b5 100644
--- a/gpui/src/platform/mac/renderer.rs
+++ b/gpui/src/platform/mac/renderer.rs
@@ -709,9 +709,9 @@ fn build_pipeline_state(
     color_attachment.set_rgb_blend_operation(metal::MTLBlendOperation::Add);
     color_attachment.set_alpha_blend_operation(metal::MTLBlendOperation::Add);
     color_attachment.set_source_rgb_blend_factor(metal::MTLBlendFactor::SourceAlpha);
-    color_attachment.set_source_alpha_blend_factor(metal::MTLBlendFactor::SourceAlpha);
+    color_attachment.set_source_alpha_blend_factor(metal::MTLBlendFactor::One);
     color_attachment.set_destination_rgb_blend_factor(metal::MTLBlendFactor::OneMinusSourceAlpha);
-    color_attachment.set_destination_alpha_blend_factor(metal::MTLBlendFactor::OneMinusSourceAlpha);
+    color_attachment.set_destination_alpha_blend_factor(metal::MTLBlendFactor::One);
 
     device
         .new_render_pipeline_state(&descriptor)