diff --git a/netbpfload/loader.h b/netbpfload/loader.h
index b884637..4da6830 100644
--- a/netbpfload/loader.h
+++ b/netbpfload/loader.h
@@ -70,7 +70,8 @@
 };
 
 // BPF loader implementation. Loads an eBPF ELF object
-int loadProg(const char* elfPath, bool* isCritical, const Location &location = {});
+int loadProg(const char* elfPath, bool* isCritical, const unsigned int bpfloader_ver,
+             const Location &location = {});
 
 // Exposed for testing
 unsigned int readSectionUint(const char* name, std::ifstream& elfFile, unsigned int defVal);