diff --git a/src/p_lx_exc.cpp b/src/p_lx_exc.cpp
index 2479dd81..8c8d3808 100644
--- a/src/p_lx_exc.cpp
+++ b/src/p_lx_exc.cpp
@@ -262,7 +262,7 @@ PackLinuxI386::buildLinuxLoader(
     cprElfHdr1 const *const hf = (cprElfHdr1 const *)fold;
     fold_hdrlen = sizeof(hf->ehdr) + hf->ehdr.e_phentsize * hf->ehdr.e_phnum +
          sizeof(l_info);
-    if (0==*(int *)(fold_hdrlen + fold)) {
+    if (0==*(const int *)(fold_hdrlen + fold)) {
         // inconsistent SIZEOF_HEADERS in *.lds (ld, binutils)
         fold_hdrlen = umax(0x80, fold_hdrlen);
     }