diff --git a/src/intel/compiler/elk/tests/run-test.py b/src/intel/compiler/elk/tests/run-test.py
index 1b85726e0d5..4e703287799 100755
--- a/src/intel/compiler/elk/tests/run-test.py
+++ b/src/intel/compiler/elk/tests/run-test.py
@@ -46,7 +46,7 @@ for asm_file in args.gen_folder.glob('*.asm'):
         command = elk_asm + [
             '--type', 'hex',
             '--gen', args.gen_name,
-            asm_file
+            asm_file.as_posix()
         ]
         stdout = subprocess.check_output(command, timeout=1).decode()
         lines_after = stdout.splitlines(keepends=True)
diff --git a/src/intel/compiler/tests/run-test.py b/src/intel/compiler/tests/run-test.py
index 5cf0d1506b6..b311f0f37f5 100755
--- a/src/intel/compiler/tests/run-test.py
+++ b/src/intel/compiler/tests/run-test.py
@@ -46,7 +46,7 @@ for asm_file in args.gen_folder.glob('*.asm'):
         command = brw_asm + [
             '--type', 'hex',
             '--gen', args.gen_name,
-            asm_file
+            asm_file.as_posix()
         ]
         stdout = subprocess.check_output(command, timeout=1).decode()
         lines_after = stdout.splitlines(keepends=True)