diff --git a/flang/test/Fir/global-initialization.fir b/flang/test/Fir/global-initialization.fir
--- a/flang/test/Fir/global-initialization.fir
+++ b/flang/test/Fir/global-initialization.fir
@@ -1,4 +1,4 @@
-// RUN: tco --fir-to-llvm-ir %s | FileCheck %s
+// RUN: fir-opt --fir-to-llvm-ir %s | FileCheck %s
 
 fir.global internal @_QEmask : !fir.array<32xi32> {
   %c0_i32 = arith.constant 1 : i32
diff --git a/flang/test/Fir/rebox-susbtring.fir b/flang/test/Fir/rebox-susbtring.fir
--- a/flang/test/Fir/rebox-susbtring.fir
+++ b/flang/test/Fir/rebox-susbtring.fir
@@ -1,6 +1,6 @@
 // Test translation to llvm IR of fir.rebox with substring array sections.
 
-// RUN: tco -o - -cg-rewrite --fir-to-llvm-ir -cse %s | FileCheck %s
+// RUN: fir-opt -o - -cg-rewrite --fir-to-llvm-ir -cse %s | FileCheck %s
 
 // Test a fir.rebox with a substring on a character array with constant
 // length (like c(:)(2:*) where c is a fir.box array with constant length).