diff --git a/port/stack_trace.cc b/port/stack_trace.cc
index bec0c994b..74996e836 100644
--- a/port/stack_trace.cc
+++ b/port/stack_trace.cc
@@ -110,6 +110,7 @@ void PrintStack(int first_frames_to_skip) {
     fprintf(stderr, "#%-2d  ", i - first_frames_to_skip);
     PrintStackTraceLine((symbols != nullptr) ? symbols[i] : nullptr, frames[i]);
   }
+  free(symbols);
 }
 
 static void StackTraceHandler(int sig) {