diff --git a/compiler-rt/test/asan/TestCases/Darwin/uuid.cc b/compiler-rt/test/asan/TestCases/Darwin/uuid.cc
index eaa022036e9f..2699f92cc29f 100644
--- a/compiler-rt/test/asan/TestCases/Darwin/uuid.cc
+++ b/compiler-rt/test/asan/TestCases/Darwin/uuid.cc
@@ -9,7 +9,7 @@
 #include <string.h>
 
 int main(int argc, char *argv[]) {
-  char buf[256];
+  char buf[2048];
   snprintf(buf, sizeof(buf), "otool -l %s", argv[0]);
   system(buf);
   // CHECK: cmd LC_UUID