diff --git a/tests/filecheck/dialects/linalg_extension.mlir b/tests/filecheck/dialects/linalg_extension.mlir
new file mode 100644
index 00000000..ee4b5521
--- /dev/null
+++ b/tests/filecheck/dialects/linalg_extension.mlir
@@ -0,0 +1,18 @@
+// RUN: XDSL_ROUNDTRIP
+
+%0, %1, %2 = "test.op"() : () -> (memref<64xi32>, memref<64xi32>, memref<64xi32>)
+
+"linalg.mul"(%0, %1, %2) <{operandSegmentSizes = array<i32: 2, 1>}> ({
+    ^bb0(%arg2: i32, %arg3: i32, %arg4: i32):
+        %s1 = "arith.muli"(%arg2, %arg3) : (i32, i32) -> i32
+        "linalg.yield"(%s1) : (i32) -> ()
+    }) : (memref<64xi32>, memref<64xi32>, memref<64xi32>) -> ()
+
+//CHECK: builtin.module {
+//CHECK-NEXT:   %0, %1, %2 = "test.op"() : () -> (memref<64xi32>, memref<64xi32>, memref<64xi32>)
+//CHECK-NEXT:   "linalg.mul"(%0, %1, %2) <{"operandSegmentSizes" = array<i32: 2, 1>}> ({
+//CHECK-NEXT:   ^0(%arg2 : i32, %arg3 : i32, %arg4 : i32):
+//CHECK-NEXT:     %s1 = arith.muli %arg2, %arg3 : i32
+//CHECK-NEXT:     linalg.yield %s1 : i32
+//CHECK-NEXT:   }) : (memref<64xi32>, memref<64xi32>, memref<64xi32>) -> ()
+//CHECK-NEXT: }
diff --git a/tests/filecheck/lit.cfg b/tests/filecheck/lit.cfg
index b1831c55..1e1dc632 100644
--- a/tests/filecheck/lit.cfg
+++ b/tests/filecheck/lit.cfg
@@ -8,5 +8,5 @@ config.name = "SNAX"
 config.test_format = lit.formats.ShTest(preamble_commands=[f"cd {snax_src}"])
 config.suffixes = ['.test', '.mlir', '.py']
 
-config.substitutions.append(('XDSL_ROUNDTRIP', "snax-opt %s --print-op-generic --split-input-file | snax-opt --split-input-file | filecheck %s"))
-config.substitutions.append(("XDSL_GENERIC_ROUNDTRIP", "snax-opt %s --print-op-generic --split-input-file | filecheck %s --check-prefix=CHECK-GENERIC"))
+config.substitutions.append(('XDSL_ROUNDTRIP', "./compiler/snax-opt %s --print-op-generic --split-input-file | ./compiler/snax-opt --split-input-file | filecheck %s"))
+config.substitutions.append(("XDSL_GENERIC_ROUNDTRIP", "./compiler/snax-opt %s --print-op-generic --split-input-file | filecheck %s --check-prefix=CHECK-GENERIC"))