diff --git a/src/link/MachO.zig b/src/link/MachO.zig
index a181338f959b8933149bf20b8a8265ea53027428..dd301f8281bc448b5ea03421ab15560fd6e8f588 100644
--- a/src/link/MachO.zig
+++ b/src/link/MachO.zig
@@ -3380,7 +3380,7 @@ fn collectExportData(self: *MachO, trie: *Trie) !void {
         const sym = self.getSymbol(global);
 
         if (sym.undf()) continue;
-        if (!sym.ext()) continue;
+        assert(sym.ext());
 
         const sym_name = self.getSymbolName(global);
         log.debug("  (putting '{s}' defined at 0x{x})", .{ sym_name, sym.n_value });