diff --git a/mozglue/misc/StackWalk.cpp b/mozglue/misc/StackWalk.cpp
index a208bad..14e1f0d 100644
--- a/mozglue/misc/StackWalk.cpp
+++ b/mozglue/misc/StackWalk.cpp
@@ -41,13 +41,7 @@ static CriticalAddress gCriticalAddress;
 #define MOZ_STACKWALK_SUPPORTS_MACOSX 0
 #endif
 
-#if (defined(linux) && \
-     ((defined(__GNUC__) && (defined(__i386) || defined(PPC))) || \
-      defined(HAVE__UNWIND_BACKTRACE)))
-#define MOZ_STACKWALK_SUPPORTS_LINUX 1
-#else
 #define MOZ_STACKWALK_SUPPORTS_LINUX 0
-#endif
 
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)
 #define HAVE___LIBC_STACK_END 1
