diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
index c058eea2354..32eac3f26d2 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
@@ -1067,7 +1067,11 @@ bool Converter::assignSlots() {
          case TGSI_SEMANTIC_COLOR:
             if (!var->data.fb_fetch_output)
                info->prop.fp.numColourResults++;
-            info->prop.fp.separateFragData = true;
+
+            if (var->data.location == FRAG_RESULT_COLOR &&
+                nir->info.outputs_written & BITFIELD64_BIT(var->data.location))
+               info->prop.fp.separateFragData = true;
+
             // sometimes we get FRAG_RESULT_DATAX with data.index 0
             // sometimes we get FRAG_RESULT_DATA0 with data.index X
             index = index == 0 ? var->data.index : index;