diff --git a/loader/include/libbpf_android.h b/loader/include/libbpf_android.h
index 0a98a1d..df4e32c 100644
--- a/loader/include/libbpf_android.h
+++ b/loader/include/libbpf_android.h
@@ -37,5 +37,7 @@
 // Exposed for testing
 unsigned int readSectionUint(const char* name, std::ifstream& elfFile, unsigned int defVal);
 
+int legacyBpfLoader(int argc, char** argv, char * const envp[]);
+
 }  // namespace bpf
 }  // namespace android