diff --git a/clang/test/Driver/avr-toolchain.c b/clang/test/Driver/avr-toolchain.c
index f68b23304998..46a3c10fa3a1 100644
--- a/clang/test/Driver/avr-toolchain.c
+++ b/clang/test/Driver/avr-toolchain.c
@@ -1,4 +1,4 @@
 // A basic clang -cc1 command-line.
 
-// RUN: %clang %s -### -target avr 2>&1 | FileCheck -check-prefix=CC1 %s
+// RUN: %clang %s -### -no-canonical-prefixes -target avr 2>&1 | FileCheck -check-prefix=CC1 %s
 // CC1: clang{{.*}} "-cc1" "-triple" "avr"