diff --git a/mlir/lib/Conversion/SPIRVToLLVM/ConvertLaunchFuncToLLVMCalls.cpp b/mlir/lib/Conversion/SPIRVToLLVM/ConvertLaunchFuncToLLVMCalls.cpp
--- a/mlir/lib/Conversion/SPIRVToLLVM/ConvertLaunchFuncToLLVMCalls.cpp
+++ b/mlir/lib/Conversion/SPIRVToLLVM/ConvertLaunchFuncToLLVMCalls.cpp
@@ -126,7 +126,7 @@
 /// Encodes the SPIR-V module's symbolic name into the name of the entry point
 /// function.
 static LogicalResult encodeKernelName(spirv::ModuleOp module) {
-  StringRef spvModuleName = *module.getSymName();
+  StringRef spvModuleName = module.getSymName().value_or(kSPIRVModule);
   // We already know that the module contains exactly one entry point function
   // based on `getKernelGlobalVariables()` call. Update this function's name
   // to: