diff --git a/source/opt/debug_info_manager.cpp b/source/opt/debug_info_manager.cpp
index 5ec0efb..3585186 100644
--- a/source/opt/debug_info_manager.cpp
+++ b/source/opt/debug_info_manager.cpp
@@ -26,7 +26,6 @@
 static const uint32_t kLineOperandIndexDebugFunction = 7;
 static const uint32_t kLineOperandIndexDebugLexicalBlock = 5;
 static const uint32_t kLineOperandIndexDebugLine = 5;
-static const uint32_t kConstanstOperandIndexLiteral = 2;
 static const uint32_t kDebugFunctionOperandFunctionIndex = 13;
 static const uint32_t kDebugFunctionDefinitionOperandDebugFunctionIndex = 4;
 static const uint32_t kDebugFunctionDefinitionOperandOpFunctionIndex = 5;
@@ -217,12 +216,7 @@
       line_number = line->GetSingleWordOperand(kOpLineOperandLineIndex);
     } else if (line->GetShader100DebugOpcode() ==
                NonSemanticShaderDebugInfo100DebugLine) {
-      auto const line_number_id =
-          line->GetSingleWordOperand(kLineOperandIndexDebugLine);
-      auto const line_number_inst =
-          context()->get_def_use_mgr()->GetDef(line_number_id);
-      line_number =
-          line_number_inst->GetSingleWordOperand(kConstanstOperandIndexLiteral);
+      line_number = line->GetSingleWordOperand(kLineOperandIndexDebugLine);
     } else {
       assert(false &&
              "Unreachable. A line instruction must be OpLine or DebugLine");
@@ -235,7 +229,8 @@
     // DefUse manager which cannot be done during inlining. The extra
     // constants that may be generated here is likely not significant
     // and will likely be cleaned up in later passes.
-    if (line_number_type == spv_operand_type_t::SPV_OPERAND_TYPE_ID) {
+    if (line_number_type == spv_operand_type_t::SPV_OPERAND_TYPE_ID &&
+        line->opcode() == SpvOpLine) {
       if (!context()->AreAnalysesValid(IRContext::Analysis::kAnalysisDefUse) ||
           !context()->AreAnalysesValid(IRContext::Analysis::kAnalysisConstants))
         line_number = AddNewConstInGlobals(context(), line_number);
diff --git a/test/opt/inline_test.cpp b/test/opt/inline_test.cpp
index 7854965..f3ff81c 100644
--- a/test/opt/inline_test.cpp
+++ b/test/opt/inline_test.cpp
@@ -4339,7 +4339,7 @@
 
 TEST_F(InlineTest, CreateDebugInlinedAtFromDebugLine) {
   const std::string text = R"(OpCapability Shader
-; CHECK: OpExtInst %void %1 DebugInlinedAt %uint_6_0
+; CHECK: OpExtInst %void %1 DebugInlinedAt %uint_6
 OpExtension "SPV_KHR_non_semantic_info"
 %1 = OpExtInstImport "NonSemantic.Shader.DebugInfo.100"
 OpMemoryModel Logical GLSL450