diff --git a/src/stub/l_lx_elf.c b/src/stub/l_lx_elf.c
index b86a95d9..d2a6ec66 100644
--- a/src/stub/l_lx_elf.c
+++ b/src/stub/l_lx_elf.c
@@ -328,8 +328,7 @@ void *upx_main(
     Elf32_Phdr const *phdr = (Elf32_Phdr const *)(1+ehdr);
     Elf32_Addr entry;
     struct Extent xo;
-    struct Extent xi = { 0, (sizeof(struct p_info) + lsize + (char *)my_ehdr) };
-    // warning: 'const' cast away
+    struct Extent xi = { 0, sizeof(struct p_info) + lsize + CONST_CAST(char *, my_ehdr) };
 
     size_t const sz_elfhdrs = ((size_t *)xi.buf)[0];  // sizeof(Ehdr+Phdrs), uncompressed
     size_t const sz_pckhdrs = ((size_t *)xi.buf)[1];  // sizeof(Ehdr+Phdrs),   compressed
diff --git a/src/stub/l_lx_sh.c b/src/stub/l_lx_sh.c
index d1fa3d47..1b5d9f7c 100644
--- a/src/stub/l_lx_sh.c
+++ b/src/stub/l_lx_sh.c
@@ -296,7 +296,7 @@ void *upx_main(
         *(unsigned short const *)(0x7c + (char const *)my_ehdr);
     struct Extent xi = { // describe compressed shell script
         ((Elf32_Phdr const *)(1 + my_ehdr))->p_filesz - lsize,
-        (lsize + (char *)my_ehdr)  // warning: 'const' cast away
+        lsize + CONST_CAST(char *, my_ehdr)
     };
     struct Extent xo = { ((struct p_info *)xi.buf)[-1].p_filesize, uncbuf };
 
diff --git a/src/stub/linux.hh b/src/stub/linux.hh
index 43f546c6..661d49bd 100644
--- a/src/stub/linux.hh
+++ b/src/stub/linux.hh
@@ -51,6 +51,10 @@ struct timex;
 #include <linux/unistd.h>
 
 
+#define CONST_CAST(type, var) \
+    ((type) ((unsigned long) (var)))
+
+
 /*************************************************************************
 // constants and types
 **************************************************************************/