diff --git a/rtc_base/system/arch.h b/rtc_base/system/arch.h
index a2a1180644..f07796bb52 100644
--- a/rtc_base/system/arch.h
+++ b/rtc_base/system/arch.h
@@ -48,7 +48,7 @@
 #define WEBRTC_ARCH_32_BITS
 #define WEBRTC_ARCH_LITTLE_ENDIAN
 #else
-#error Please add support for your architecture in typedefs.h
+#error Please add support for your architecture in rtc_base/system/arch.h
 #endif
 
 #if !(defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^ defined(WEBRTC_ARCH_BIG_ENDIAN))