diff --git a/test/Transforms/Substrait/emit-deduplication.mlir b/test/Transforms/Substrait/emit-deduplication.mlir
index 68233beb1ae3..0a7d53213e8f 100644
--- a/test/Transforms/Substrait/emit-deduplication.mlir
+++ b/test/Transforms/Substrait/emit-deduplication.mlir
@@ -1,4 +1,5 @@
-// RUN: structured-opt -split-input-file %s -substrait-emit-deduplication \
+// RUN: structured-opt -split-input-file %s \
+// RUN:   -substrait-emit-deduplication -allow-unregistered-dialect \
 // RUN: | FileCheck %s
 
 // `cross` op with left `emit` input with duplicates.
@@ -165,13 +166,11 @@ substrait.plan version 0 : 42 : 1 {
 // CHECK-NEXT:        %[[V6:.*]] = field_reference %[[ARG0]][1] : [[TYPE]]
 // CHECK-NEXT:        %[[V7:.*]] = field_reference %[[V6]][1] :
 // CHECK-NEXT:        %[[V9:.*]] = field_reference %[[ARG0]][2] : [[TYPE]]
-// CHECK-NEXT:        %[[Va:.*]] = func.call @f(%[[V3]], %[[V3]], %[[V5]], %[[V7]], %[[V3]], %[[V9]])
+// CHECK-NEXT:        %[[Va:.*]] = "test.op"(%[[V3]], %[[V3]], %[[V5]], %[[V7]], %[[V3]], %[[V9]])
 // CHECK-NEXT:        yield %[[Va]] : si1
 // CHECK-NEXT:      }
 // CHECK-NEXT:      %[[Vb:.*]] = emit [0, 0, 1, 0, 2] from %[[V2]]
 
-func.func private @f(si1, si1, si1, si32, si1, si1) -> si1
-
 substrait.plan version 0 : 42 : 1 {
   relation {
     %0 = named_table @t1 as ["a", "b", "c", "d", "e"] : tuple<si1, si1, tuple<si1, si32>>
@@ -189,7 +188,7 @@ substrait.plan version 0 : 42 : 1 {
       %7 = field_reference %6[1] : tuple<si1, si32>
       %8 = field_reference %arg0[3] : tuple<si1, si1, tuple<si1, si32>, si1, si1>
       %9 = field_reference %arg0[4] : tuple<si1, si1, tuple<si1, si32>, si1, si1>
-      %a = func.call @f(%3, %4, %5, %7, %8, %9) : (si1, si1, si1, si32, si1, si1) -> si1
+      %a = "test.op"(%3, %4, %5, %7, %8, %9) : (si1, si1, si1, si32, si1, si1) -> si1
       yield %a : si1
     }
     yield %2 : tuple<si1, si1, tuple<si1, si32>, si1, si1>
@@ -207,13 +206,11 @@ substrait.plan version 0 : 42 : 1 {
 // CHECK-NEXT:      %[[V2:.*]] = project %[[V1]] : tuple<si32> -> tuple<si32, si1> {
 // CHECK-NEXT:      ^{{.*}}(%[[ARG0:.*]]: [[TYPE:.*]]):
 // CHECK-NEXT:        %[[V3:.*]] = field_reference %[[ARG0]][0] : [[TYPE]]
-// CHECK-NEXT:        %[[V5:.*]] = func.call @f(%[[V3]], %[[V3]]) :
+// CHECK-NEXT:        %[[V5:.*]] = "test.op"(%[[V3]], %[[V3]]) :
 // CHECK-NEXT:        yield %[[V5]] : si1
 // CHECK-NEXT:      }
 // CHECK-NEXT:      %[[V6:.*]] = emit [0, 0, 1] from %[[V2]]
 
-func.func private @f(si32, si32) -> si1
-
 substrait.plan version 0 : 42 : 1 {
   relation {
     %0 = named_table @t1 as ["a", "b"] : tuple<si1, si32>
@@ -222,7 +219,7 @@ substrait.plan version 0 : 42 : 1 {
     ^bb0(%arg : tuple<si32, si32>):
       %3 = field_reference %arg[0] : tuple<si32, si32>
       %4 = field_reference %arg[1] : tuple<si32, si32>
-      %5 = func.call @f(%3, %4) : (si32, si32) -> si1
+      %5 = "test.op"(%3, %4) : (si32, si32) -> si1
       yield %5 : si1
     }
     yield %2 : tuple<si32, si32, si1>
@@ -239,20 +236,18 @@ substrait.plan version 0 : 42 : 1 {
 // CHECK-NEXT:      %[[V1:.*]] = project %[[V0]] : {{.*}} {
 // CHECK-NEXT:      ^{{.*}}(%[[ARG0:.*]]: [[TYPE:.*]]):
 // CHECK-NEXT:        %[[V2:.*]] = field_reference %[[ARG0]][0] : [[TYPE]]
-// CHECK-NEXT:        %[[V3:.*]] = func.call @f(%[[V2]]) :
+// CHECK-NEXT:        %[[V3:.*]] = "test.op"(%[[V2]]) :
 // CHECK-NEXT:        yield %[[V3]] : si1
 // CHECK-NEXT:      }
 // CHECK-NEXT:      %[[V4:.*]] = emit [0, 1, 1] from %[[V1]]
 
-func.func private @f(si32) -> si1
-
 substrait.plan version 0 : 42 : 1 {
   relation {
     %0 = named_table @t1 as ["a"] : tuple<si32>
     %1 = project %0 : tuple<si32> -> tuple<si32, si1, si1> {
     ^bb0(%arg : tuple<si32>):
       %2 = field_reference %arg[0] : tuple<si32>
-      %3 = func.call @f(%2) : (si32) -> si1
+      %3 = "test.op"(%2) : (si32) -> si1
       // We yield two times the same value. This pattern should remove one of
       // the two and re-establish the duplicate with an `amit` after the
       // `project`.
@@ -272,20 +267,18 @@ substrait.plan version 0 : 42 : 1 {
 // CHECK-NEXT:      %[[V1:.*]] = project %[[V0]] : {{.*}} {
 // CHECK-NEXT:      ^{{.*}}(%[[ARG0:.*]]: [[TYPE:.*]]):
 // CHECK-NEXT:        %[[V2:.*]] = field_reference %[[ARG0]][0] : [[TYPE]]
-// CHECK-NEXT:        %[[V3:.*]] = func.call @f(%[[V2]]) :
+// CHECK-NEXT:        %[[V3:.*]] = "test.op"(%[[V2]]) :
 // CHECK-NEXT:        yield %[[V3]] : si1
 // CHECK-NEXT:      }
 // CHECK-NEXT:      %[[V4:.*]] = emit [0, 1, 0, 2] from %[[V1]]
 
-func.func private @f(si32) -> si1
-
 substrait.plan version 0 : 42 : 1 {
   relation {
     %0 = named_table @t1 as ["a", "b"] : tuple<si32, si1>
     %1 = project %0 : tuple<si32, si1> -> tuple<si32, si1, si32, si1> {
     ^bb0(%arg0: tuple<si32, si1>):
       %2 = field_reference %arg0[0] : tuple<si32, si1>
-      %3 = func.call @f(%2) : (si32) -> si1
+      %3 = "test.op"(%2) : (si32) -> si1
       // `%2` yields an input field without modifications. This pattern removes
       // that yielding and re-establishes the duplicated field with an `emit`
       // following the `project` instead.