diff --git a/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp b/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
--- a/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
+++ b/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
@@ -2124,6 +2124,8 @@
 
     if (intTy.isSignless()) {
       specialName << intCst.getInt();
+    } else if (intTy.isUnsigned()) {
+      specialName << intCst.getUInt();
     } else {
       specialName << intCst.getSInt();
     }
diff --git a/mlir/test/Conversion/PDLToPDLInterp/pdl-to-pdl-interp-uint.mlir b/mlir/test/Conversion/PDLToPDLInterp/pdl-to-pdl-interp-uint.mlir
new file mode 100644
--- /dev/null
+++ b/mlir/test/Conversion/PDLToPDLInterp/pdl-to-pdl-interp-uint.mlir
@@ -0,0 +1,8 @@
+// RUN: mlir-opt -split-input-file -convert-pdl-to-pdl-interp %s | FileCheck %s
+
+// CHECK:spirv.func @func()
+// CHECK-NEXT:%cst0_ui8 = spirv.Constant 0 : ui8
+spirv.func @func() -> () "None" { 
+  %5 = spirv.Constant 0 : ui8  
+  spirv.Return
+}