diff --git a/tools/fbi/src/find_bug_inj.cpp b/tools/fbi/src/find_bug_inj.cpp
index 135151d..44a4313 100644
--- a/tools/fbi/src/find_bug_inj.cpp
+++ b/tools/fbi/src/find_bug_inj.cpp
@@ -268,10 +268,6 @@ void update_unique_taint_sets(Json::Value& tquls) {
 
 bool is_header_file(std::string filename) {
     uint32_t l = filename.length();
-    if (l < 2) {
-        // Can occur with files like '9', so we just skip them.
-        return true;
-    }
     return (filename[l-2] == '.' && filename[l-1] == 'h');
 }