diff --git a/test/testclangimport.cpp b/test/testclangimport.cpp
index 8dc4eb370..5954e55a8 100644
--- a/test/testclangimport.cpp
+++ b/test/testclangimport.cpp
@@ -127,6 +127,9 @@ private:
         Tokenizer tokenizer(&settings, this);
         std::istringstream istr(clang);
         clangimport::parseClangAstDump(&tokenizer, istr);
+        if (!tokenizer.tokens()) {
+        	return std::string();
+        }
         return tokenizer.tokens()->stringifyList(true, false, false, false, false);
     }