diff --git a/src/processor/minidump.cc b/src/processor/minidump.cc
index c9fa4d81..10400047 100644
--- a/src/processor/minidump.cc
+++ b/src/processor/minidump.cc
@@ -1988,7 +1988,9 @@ string MinidumpModule::debug_file() const {
           // GetMiscRecord already byte-swapped the data[] field if it contains
           // UTF-16, so pass false as the swap argument.
           scoped_ptr<string> new_file(UTF16ToUTF8(string_utf16, false));
-          file = *new_file;
+          if (new_file.get() != nullptr) {
+            file = *new_file;
+          }
         }
       }
     }