diff --git a/renderdoc/driver/vulkan/vk_shaderdebug.cpp b/renderdoc/driver/vulkan/vk_shaderdebug.cpp
index 98da44c55..27c45ef15 100644
--- a/renderdoc/driver/vulkan/vk_shaderdebug.cpp
+++ b/renderdoc/driver/vulkan/vk_shaderdebug.cpp
@@ -6281,7 +6281,7 @@ ShaderDebugTrace *VulkanReplay::DebugComputeCommon(ShaderStage stage, uint32_t e
                compData->threadid[1] * threadDim[0] + compData->threadid[0];
       }
 
-      if(rdcfixedarray<uint32_t, 3>(compData->threadid) == threadid)
+      if(rdcfixedarray<uint32_t, 3>(compData->threadid) == threadid && subgroupData->isActive)
         laneIndex = lane;
 
       apiWrapper->thread_props[lane][(size_t)rdcspv::ThreadProperty::Active] = subgroupData->isActive;