diff --git a/src/linker.cpp b/src/linker.cpp
index d5296a96..26a1aa21 100644
--- a/src/linker.cpp
+++ b/src/linker.cpp
@@ -356,7 +356,7 @@ ElfLinker::Section *ElfLinker::addSection(const char *sname, const void *sdata,
 }
 
 ElfLinker::Symbol *ElfLinker::addSymbol(const char *name, const char *section,
-                                        unsigned offset)
+                                        u64 offset)
 {
     //printf("addSymbol: %s %s 0x%x\n", name, section, offset);
     if (update_capacity(nsymbols, &nsymbols_capacity))
diff --git a/src/linker.h b/src/linker.h
index 673b9f3c..445a33e7 100644
--- a/src/linker.h
+++ b/src/linker.h
@@ -73,7 +73,7 @@ protected:
     Section *findSection(const char *name, bool fatal=true) const;
     Symbol *findSymbol(const char *name, bool fatal=true) const;
 
-    Symbol *addSymbol(const char *name, const char *section, unsigned offset);
+    Symbol *addSymbol(const char *name, const char *section, u64 offset);
     Relocation *addRelocation(const char *section, unsigned off, const char *type,
                               const char *symbol, u64 add);