diff --git a/src/p_djgpp2.cpp b/src/p_djgpp2.cpp
index ea9a5ca0..5f6dc296 100644
--- a/src/p_djgpp2.cpp
+++ b/src/p_djgpp2.cpp
@@ -346,7 +346,7 @@ void PackDjgpp2::pack(OutputFile *fo)
 
     linker->defineSymbol("original_entry", coff_hdr.a_entry);
     linker->defineSymbol("length_of_bss", ph.overlap_overhead / 4);
-    //patchDecompressor(loader, lsize); // FIXME
+    defineDecompressorSymbols();
     assert(bss->vaddr == ((size + 0x1ff) &~ 0x1ff) + (text->vaddr &~ 0x1ff));
     linker->defineSymbol("stack_for_lzma", bss->vaddr + bss->size);
     linker->defineSymbol("start_of_uncompressed", text->vaddr - hdrsize);
diff --git a/src/p_tmt.cpp b/src/p_tmt.cpp
index d28f1947..4f09532e 100644
--- a/src/p_tmt.cpp
+++ b/src/p_tmt.cpp
@@ -261,7 +261,7 @@ void PackTmt::pack(OutputFile *fo)
     // patch loader
     linker->defineSymbol("original_entry", ih.entry);
     defineFilterSymbols(linker, &ft);
-    // FIXME patchDecompressor(loader, lsize);
+    defineDecompressorSymbols();
 
     linker->defineSymbol("bytes_to_copy", ph.c_len + d_len);
     linker->defineSymbol("copy_dest", ph.u_len + ph.overlap_overhead + d_len - 1);
diff --git a/src/p_vmlinx.cpp b/src/p_vmlinx.cpp
index 280e781b..f1dbf25f 100644
--- a/src/p_vmlinx.cpp
+++ b/src/p_vmlinx.cpp
@@ -253,10 +253,9 @@ void PackVmlinuxI386::pack(OutputFile *fo)
     if (0x40==(0xf0 & ft.id)) {
         linker->defineSymbol("filter_length", ph.u_len); // redefine
     }
+    defineDecompressorSymbols();
     linker->relocate();
 
-    // FIXME patchDecompressor(loader, lsize);
-
     MemBuffer loader(lsize);
     memcpy(loader, getLoader(), lsize);
     patchPackHeader(loader, lsize);
diff --git a/src/p_vmlinz.cpp b/src/p_vmlinz.cpp
index fde4d0f8..8cc27df6 100644
--- a/src/p_vmlinz.cpp
+++ b/src/p_vmlinz.cpp
@@ -306,7 +306,7 @@ void PackVmlinuzI386::pack(OutputFile *fo)
     const unsigned lsize = getLoaderSize();
 
     defineFilterSymbols(linker, &ft);
-    // FIXME patchDecompressor(loader, lsize);
+    defineDecompressorSymbols();
     linker->defineSymbol("src_for_decompressor", zimage_offset + lsize);
     linker->defineSymbol("original_entry", kernel_entry);
     linker->defineSymbol("stack_offset", stack_offset_during_uncompression);
@@ -418,7 +418,7 @@ void PackBvmlinuzI386::pack(OutputFile *fo)
     if (0x40==(0xf0 & ft.id)) {
         linker->defineSymbol("filter_length", ph.u_len); // redefine
     }
-    // FIXME patchDecompressor(loader, lsize);
+    defineDecompressorSymbols();
     linker->defineSymbol("original_entry", kernel_entry);
     linker->defineSymbol("stack_offset", stack_offset_during_uncompression);
     linker->relocate();
diff --git a/src/p_wcle.cpp b/src/p_wcle.cpp
index 952db89d..5718138d 100644
--- a/src/p_wcle.cpp
+++ b/src/p_wcle.cpp
@@ -548,7 +548,7 @@ void PackWcle::pack(OutputFile *fo)
     linker->defineSymbol("start_of_relocs", mps*pages);
     defineFilterSymbols(linker, &ft);
     linker->defineSymbol("filter_buffer_start", text_vaddr);
-    // FIXME patchDecompressor(loader, lsize);
+    defineDecompressorSymbols();
 
     unsigned jpos = (((ph.c_len + 3) &~ 3) + d_len + 3) / 4;
     linker->defineSymbol("words_to_copy", jpos);