diff --git a/linker/linker.cpp b/linker/linker.cpp
index cfa8c8f..94c318c 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -3486,11 +3486,11 @@
         "(new hash type from the future?)", get_realpath());
     return false;
   }
-  if (strtab_ == 0) {
+  if (strtab_ == nullptr) {
     DL_ERR("empty/missing DT_STRTAB in \"%s\"", get_realpath());
     return false;
   }
-  if (symtab_ == 0) {
+  if (symtab_ == nullptr) {
     DL_ERR("empty/missing DT_SYMTAB in \"%s\"", get_realpath());
     return false;
   }