diff --git a/soc/runtime/elf_loader.h b/soc/runtime/elf_loader.h
index 241ea779b..a116e0851 100644
--- a/soc/runtime/elf_loader.h
+++ b/soc/runtime/elf_loader.h
@@ -10,6 +10,7 @@ typedef void * (*symbol_resolver)(const char *);
 typedef int (*symbol_callback)(const char *, void *);
 
 void *find_symbol(const struct symbol *symbols, const char *name);
+/* elf_data must be aligned on a 32-bit boundary */
 int load_elf(symbol_resolver resolver, symbol_callback callback, void *elf_data, int elf_length, void *dest, int dest_length);
 
 #endif /* __ELF_LOADER_H */