diff --git a/renderdoc/driver/d3d11/d3d11_shaderdebug.cpp b/renderdoc/driver/d3d11/d3d11_shaderdebug.cpp
index 7f5981fcd..653824694 100644
--- a/renderdoc/driver/d3d11/d3d11_shaderdebug.cpp
+++ b/renderdoc/driver/d3d11/d3d11_shaderdebug.cpp
@@ -2183,7 +2183,8 @@ void ExtractInputsPS(PSInput IN, float4 debug_pixelPos : SV_Position, uint prim
 
       if(dxbc->m_DebugInfo)
       {
-        const ASMOperation &op = dxbc->GetInstruction((size_t)s.nextInstruction);
+        size_t inst = RDCMIN((size_t)s.nextInstruction, dxbc->GetNumInstructions() - 1);
+        const ASMOperation &op = dxbc->GetInstruction(inst);
         dxbc->m_DebugInfo->GetLocals(s.nextInstruction, op.offset, s.locals);
       }