diff --git a/linker/linker_phdr.cpp b/linker/linker_phdr.cpp
index 83f163c..0940305 100644
--- a/linker/linker_phdr.cpp
+++ b/linker/linker_phdr.cpp
@@ -147,7 +147,8 @@
     return false;
   }
   if (rc != sizeof(header_)) {
-    DL_ERR("\"%s\" is too small to be an ELF executable", name_);
+    DL_ERR("\"%s\" is too small to be an ELF executable. Expected at least %d bytes, only found %d bytes.",
+           name_, sizeof(header_), rc);
     return false;
   }
   return true;