diff --git a/llvm/lib/Target/SPIRV/SPIRVGlobalRegistry.cpp b/llvm/lib/Target/SPIRV/SPIRVGlobalRegistry.cpp
index 62bd8d1f9d2433f..af0df4d6e5d563a 100644
--- a/llvm/lib/Target/SPIRV/SPIRVGlobalRegistry.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVGlobalRegistry.cpp
@@ -400,7 +400,7 @@ Register SPIRVGlobalRegistry::getOrCreateBaseRegister(
   }
   assert(Type->getOpcode() == SPIRV::OpTypeInt);
   SPIRVType *SpvBaseType = getOrCreateSPIRVIntegerType(BitWidth, I, TII);
-  return getOrCreateConstInt(Val->getUniqueInteger().getSExtValue(), I,
+  return getOrCreateConstInt(Val->getUniqueInteger().getZExtValue(), I,
                              SpvBaseType, TII, ZeroAsNull);
 }