diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
index 343a97e5..f347e847 100644
--- a/src/p_lx_elf.cpp
+++ b/src/p_lx_elf.cpp
@@ -1683,7 +1683,7 @@ PackLinuxElf32::invert_pt_dynamic(Elf32_Dyn const *dynp, unsigned dt_filesz)
         unsigned const *const chains = &buckets[nbucket]; (void)chains;
 
         unsigned const v_sym = !x_sym ? 0 : get_te32(&dynp0[-1+ x_sym].d_val);
-        if (!nbucket || (nbucket>>31) || !v_sym || file_size <= v_sym
+        if (!nbucket || (nbucket>>31) || !v_sym || (unsigned)file_size <= v_sym
         || ((v_hsh < v_sym) && (v_sym - v_hsh) < sizeof(*buckets)*(2+ nbucket))
         ) {
             char msg[80]; snprintf(msg, sizeof(msg),
@@ -5298,7 +5298,7 @@ PackLinuxElf64::invert_pt_dynamic(Elf64_Dyn const *dynp, upx_uint64_t dt_filesz)
         unsigned const *const chains = &buckets[nbucket]; (void)chains;
 
         unsigned const v_sym = !x_sym ? 0 : get_te32(&dynp0[-1+ x_sym].d_val);
-        if (!nbucket || (nbucket>>31) || !v_sym || file_size <= v_sym
+        if (!nbucket || (nbucket>>31) || !v_sym || (unsigned)file_size <= v_sym
         || ((v_hsh < v_sym) && (v_sym - v_hsh) < sizeof(*buckets)*(2+ nbucket))
         ) {
             char msg[80]; snprintf(msg, sizeof(msg),