diff --git a/AK/StringImpl.cpp b/AK/StringImpl.cpp
index 2e7797db403..c07b9f3c9e7 100644
--- a/AK/StringImpl.cpp
+++ b/AK/StringImpl.cpp
@@ -37,6 +37,7 @@
 unsigned g_stringimpl_count;
 static HashTable<StringImpl*>* g_all_live_stringimpls;
 
+void dump_all_stringimpls();
 void dump_all_stringimpls()
 {
     unsigned i = 0;