diff --git a/Rsconscript b/Rsconscript
index a2bee71..423461d 100644
--- a/Rsconscript
+++ b/Rsconscript
@@ -101,6 +101,7 @@ hulk_env = env "hulk", use: %w[ldc2 x86_64-elf-gcc] do |env|
   env["OBJDUMP"] = "x86_64-elf-objdump"
   env["OBJCOPY"] = "x86_64-elf-objcopy"
   env.Program("^/hulk.elf", "${sources}")
+  env.produces("^/hulk.elf", "^/hulk.elf.map")
   env.depends("^/hulk.elf", "src/hulk/hulk.ld")
   env["SIZE"] = "x86_64-elf-size"
   env.Size("^/hulk.size", "^/hulk.elf")
@@ -131,6 +132,7 @@ hello_env = env "hello", use: %w[ldc2 x86_64-w64-mingw32-gcc] do |env|
   env["LDCMD"] = %w[${LD} -o ${_TARGET} ${LDFLAGS} ${_SOURCES} ${LIBDIRPREFIX}${LIBPATH} ${LIBLINKPREFIX}${LIBS}]
   env["OBJDUMP"] = "x86_64-w64-mingw32-objdump"
   env.Program("^/BOOTX64.EFI", "${sources}")
+  env.produces("^/BOOTX64.EFI", "^/BOOTX64.EFI.map")
   env["SIZE"] = "x86_64-w64-mingw32-size"
   env.Size("^/BOOTX64.size", "^/BOOTX64.EFI")
   env.Disassemble("^/BOOTX64.txt", "^/BOOTX64.EFI")