diff --git a/runtime/libprofile/LineProfiling.c b/runtime/libprofile/LineProfiling.c
index 786dc6e8e12..9db789ec0b5 100644
--- a/runtime/libprofile/LineProfiling.c
+++ b/runtime/libprofile/LineProfiling.c
@@ -31,7 +31,7 @@ void llvm_prof_linectr_start_file(const char *orig_filename) {
 void llvm_prof_linectr_emit_counter(const char *dir, const char *file,
                                     uint32_t line, uint32_t column,
                                     uint64_t *counter) {
-  printf("%s/%s:%u:%u %ull\n", dir, file, line, column,
+  printf("%s/%s:%u:%u %llu\n", dir, file, line, column,
          (unsigned long long)(*counter));
 }