diff --git a/virtual_machine/disasm.h b/virtual_machine/disasm.h
index f963bee18..ae5bd368c 100644
--- a/virtual_machine/disasm.h
+++ b/virtual_machine/disasm.h
@@ -4,13 +4,6 @@
 #include "bytecode.h"
 #include <stdio.h>
 
-/* Disassemble all public symbols in bc, writing output to f.
-   Returns 0 on success, -1 on error. */
-int disasm(const bytecode *bc, FILE *f);
+void dump_bytecode(FILE *f, const bytecode *bc);
 
-/* Disassemble a single function starting at code_offset within bc->code,
-   writing output to f. name may be NULL. */
-int disasm_func(const bytecode *bc, size_t code_offset, const char *name,
-                uint8_t flag, FILE *f);
-
-#endif /* DISASM_H */
+#endif // DISASM_H
diff --git a/virtual_machine/dune b/virtual_machine/dune
index 25a0d7a72..6218757c1 100644
--- a/virtual_machine/dune
+++ b/virtual_machine/dune
@@ -14,6 +14,7 @@
   ops.c
   memory.c
   opcodes.c
+  disasm.c
   (glob_files *.h)
   ../runtime/Makefile
   ../runtime/gc.c